Tilted Gaming

Creature — Elemental Dog

Double strike Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Sorcery

All creatures lose indestructible until end of turn. Hour of Devastation deals 5 damage to each creature and each non-Bolas planeswalker.

Sorcery

This spell costs {3} less to cast if there are ten or more nonland permanents on the battlefield. Destroy all nonland permanents.

Creature — Illusion Wall

Defender, flying

Artifact

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

Sorcery

When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy. Raid — If you attacked this turn, when you next cast an instant or sorcery spell this turn, copy that spell an additional time. You may choose new targets for the copy.

Sorcery

Create a 2/2 green Wolf creature token for each Forest you control.

Enchantment

Flash Each creature you control that's a Wolf or a Werewolf gets +1/+1 and has trample.

Creature — Goblin Mercenary

Start your engines! Other Goblins you control have haste. At the beginning of combat on your turn, create a 1/1 red Goblin creature token. That token attacks this combat if able. Max speed — {T}: Add {R} for each Goblin you control.

Artifact Creature — Shapeshifter

Prototype {2}{U}{U} — 3/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) You may have this creature enter as a copy of an artifact or creature you control, except it's an artifact creature in addition to its other types, and its power and toughness are equal to this creature's power and toughness.

Creature — Dinosaur

Ward {2} At the beginning of your first main phase, add {G}{G}.

Creature — Merfolk Pirate

Flash If an opponent would draw a card except the first one they draw in each of their draw steps, instead you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Creature — Kraken Horror

Flash This spell can't be countered. Whenever you cast a spell, choose up to one — • Return target spell you don't control to its owner's hand. • Return target nonland permanent to its owner's hand.

Artifact Creature — Robot Assassin

Deathtouch

Creature — Human Rogue

{T}: Draw two cards. Target opponent gains control of this creature. Activate only during your turn.

Creature — Human Monk

Flash When this creature enters, target creature an opponent controls gets -2/-0 until end of turn.

Sorcery

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. Put a +1/+1 counter on a creature you control.

Creature — Zombie Warrior

As long as there are three or more different kinds of counters among creatures you control, this creature gets +2/+4. You may cast this card from your graveyard. If you do, it enters with a finality counter on it. (If a creature with a finality counter on it would die, exile it instead.)

Creature — Giant

Vigilance {3}{W}{W}{W}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) As long as this creature is monstrous, it has reach and can block an additional ninety-nine creatures each combat.

Creature — Hydra

This creature enters with X +1/+1 counters on it. This creature can't be blocked by more than one creature. Whenever this creature is dealt damage, put that many +1/+1 counters on it. (It must survive the damage to get the counters.)

Creature — Zombie

{1}, Sacrifice another creature: Put a +1/+1 counter on this creature.

Creature — Skeleton Beast

Menace When this creature enters, target opponent creates two 1/1 white Dog creature tokens. When this creature dies, each opponent loses 3 life. Disguise {1}{B}

Artifact — Equipment

Equipped creature gets +1/+1. Equipped creature has deathtouch during your turn. Otherwise, it has reach. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Artifact — Equipment

When this Equipment enters, attach it to target creature you control. That creature deals damage equal to its power to up to one target creature you don't control. Equipped creature has reach and ward {2}. Equip {1}

Sorcery

Until end of turn, target creature gets +3/+3 and gains trample and "Whenever this creature deals combat damage to a player, draw that many cards."

Enchantment — Class

(Gain the next level as a sorcery to add its ability.) When this Class enters, target creature you control deals damage equal to its power to target creature you don't control. {1}{G}: Level 2 Whenever you attack, target attacking creature gets +1/+0 and gains trample until end of turn. {3}{G}: Level 3 At the beginning of your end step, if you control a creature with power 4 or greater, draw a card.

Instant

Return all artifacts target player owns to their hand.

Creature — Hippogriff

Flash Flying Creatures entering don't cause abilities to trigger.

Land

{T}: Add {G}. {T}: Add {W}. Activate only if you control a Forest or a Plains.

Creature — Elemental Insect

This spell costs {1} less to cast for each creature card you own in exile and in your graveyard. Menace, deathtouch

Creature — Human Warrior

You may exert this creature as it attacks. When you do, target creature gets +X/+X until end of turn, where X is the number of counters on permanents you control. (An exerted creature won't untap during your next untap step.) {2}{G}: Adapt 2. (If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.)

Legendary Creature — Elemental Villain

Whenever you cast a blue spell, if Hydro-Man is a creature, he gets +1/+1 until end of turn. At the beginning of your end step, untap Hydro-Man. Until your next turn, he becomes a land and gains "{T}: Add {U}." (He's not a creature during that time.)

Legendary Creature — Human Warlock

Whenever you tap an untapped creature an opponent controls, you may pay {1}. When you do, choose one — • Create a 4/4 white and blue Elemental creature token. • Put a +1/+1 counter on each creature you control. • Scry 2, then draw a card.

Legendary Artifact

{1}, {T}: Tap target creature. This ability costs {1} less to activate during your turn. {3}, Sacrifice Hylda's Crown of Winter: Draw a card for each tapped creature your opponents control.

Artifact — Equipment

Equipped creature gets +3/+1. Void — At the beginning of your end step, if a nonland permanent left the battlefield this turn or a spell was warped this turn, attach this Equipment to target creature you control. Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)

Sorcery

Surveil 1, then you draw a card and lose 1 life. (To surveil 1, look at the top card of your library. You may put it into your graveyard.) Void — If a nonland permanent left the battlefield this turn or a spell was warped this turn, draw another card.

Creature — Dragon

Flying, haste You may cast sorcery spells as though they had flash. (You may cast them any time you could cast an instant.)

Enchantment Creature — Siren

Bestow {5}{U}{U} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Flying You control enchanted creature. Enchanted creature gets +1/+1 and has flying.

Instant

Draw two cards. Then you may discard a nonland card. When you do, Hypothesizzle deals 4 damage to target creature.

Creature — Beast

Trample Landfall — Whenever a land you control enters, this creature gets +1/+0 until end of turn.

Creature — Dragon

Flying When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control this creature. Spells your opponents cast that target this creature cost {2} more to cast.

Creature — Elemental Ooze

When this creature enters, tap target artifact or creature an opponent controls. Put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)