The Relentless Dragon

Creature — Human Ninja

Ninjutsu {2}{U} ({2}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) When this creature enters, return up to one target creature to its owner's hand.

Creature — Dragon

Flying Whenever you cast a spell, you may discard your hand. If you do, draw a card for each of that spell's colors. When this creature dies, it deals X damage to any target, where X is the number of colors among permanents you control.

Creature — Insect

Flying {W}: This creature gets +0/+1 until end of turn.

Land

{T}: Add {C}. {W}{U}, {T}, Exile a creature card from your graveyard: Create a 1/1 white Spirit creature token with flying.

Sorcery

Exchange your graveyard and library. Then shuffle your library.

Artifact

{2}, {T}: Exile target card from a graveyard. {2}{W}{B}, {T}, Sacrifice this artifact: Exile target nonland card from a graveyard, all other cards from graveyards with the same name as that card, and all permanents with that name.

Creature — Dragon

Flying {1}{R}: This creature gets +1/+0 until end of turn. Whenever this creature deals combat damage to a player, you may have it deal that much damage to target creature that player controls.

Creature — Human Rogue Rigger

Whenever an artifact is put into a graveyard from the battlefield, you may put a +1/+1 counter on this creature.

Legendary Snow Creature — Shapeshifter

Changeling (This card is every creature type.) You may have Moritte enter as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling.

Creature — Vampire

Flying At the beginning of your upkeep, you lose 1 life.

Creature — Elemental

This creature enters with two -1/-1 counters on it. Remove a -1/-1 counter from this creature: Add one mana of any color.

Instant

This spell costs {2} less to cast if you gained life this turn. Destroy target nonland permanent.

Creature — Lhurgoyf

Mortivore's power and toughness are each equal to the number of creature cards in all graveyards. {B}: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Creature — Elemental Hydra

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) This creature enters with a +1/+1 counter on it. Landfall — Whenever a land you control enters, double the number of +1/+1 counters on this creature.

Artifact

This artifact enters tapped. {T}: Add {G}.

Creature — Snake

Deathtouch

Enchantment — Aura

Flash Enchant creature Enchanted creature gets +2/+1. When enchanted creature dies, create two Treasure tokens.

Creature — Shapeshifter

Changeling (This card is every creature type.) Tap an untapped creature you control: This creature gains flying until end of turn.

Creature — Fox Warrior

Flying {3}{W}, {T}: Tap target creature.

Basic Land — Mountain

({T}: Add {R}.)

Land

Red legendary creatures you control have "bands with other legendary creatures." (Any legendary creatures can attack in a band as long as at least one has "bands with other legendary creatures." Bands are blocked as a group. If at least two legendary creatures you control, one of which has "bands with other legendary creatures," are blocking or being blocked by the same creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Creature — Yeti

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.) Protection from white

Sorcery

Return up to one target creature card from your graveyard to your hand. Create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."

Enchantment

Creatures without flying don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player may choose any number of tapped creatures without flying they control and pay {2} for each creature chosen this way. If the player does, untap those creatures.

Creature — Elemental

Flying When this creature enters, draw two cards. Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Artifact Creature — Construct

When this creature enters, you get {E}{E}{E} (three energy counters). Pay {E}: This creature gains your choice of flying, vigilance, or lifelink until end of turn. Pay {E}: This creature gets +2/-2 or -2/+2 until end of turn.

Sorcery

If X is 1, scry 1, then draw a card. If X is 2, you may choose a player. They return a creature they control to its owner's hand. If X is 3, create a 4/4 blue and red Elemental creature token. If X is 4 or more, do all of the above.

Legendary Creature — Kor Ally

Haste Rally — Whenever Munda or another Ally you control enters, you may look at the top four cards of your library. If you do, reveal any number of Ally cards from among them, then put those cards on top of your library in any order and the rest on the bottom in any order.

Creature — Kor Knight Ally

Cohort — {T}, Tap an untapped Ally you control: Put a +1/+1 counter on each creature you control.

Enchantment

Creatures with no abilities get +2/+2.

Instant

Destroy target creature.

Creature — Bird

Flying Whenever another creature dies, you may draw a card. If you do, discard a card.

Enchantment

{B}{B}, Pay half your life, rounded up: Destroy target nonblack creature. It can't be regenerated.