Balance Martial Arts and Gaming

Creature — Rhino

Trample When this creature enters, other creatures you control gain trample until end of turn.

Creature — Human Wizard

When this creature enters, it deals X damage to target creature or planeswalker, where X is the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

Creature — Dinosaur

Other Dinosaurs you control get +1/+1. {5}{G}: Create a 3/3 green Dinosaur creature token with trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Creature — Devil

When this creature dies, it deals 1 damage to any target. {1}{R}: This creature gets +2/+0 until end of turn.

Creature — Cat Seal

Vigilance At the beginning of your upkeep, tap this creature. Whenever you draw your second card each turn, untap this creature.

Creature — Human Knight

Whenever this creature attacks, if you control a Dinosaur, this creature gets +1/+1 until end of turn.

Legendary Creature — Skeleton Rogue

When Tinybones enters, each opponent discards a card. Whenever a player discards one or more cards, Tinybones deals 1 damage to each opponent.

Creature — Merfolk Scout

When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Legendary Creature — Skeleton Druid

Reach Whenever you gain life, put two +1/+1 counters on Titanbones. When you discard this card, you gain 3 life.

Instant

As an additional cost to cast this spell, reveal a colorless creature card from your hand. Exile target creature if its power is less than or equal to the revealed card's power.

Creature — Drake

Flying Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)

Creature — Human Wizard

Legendary Creature — Human Advisor

Flying Planeswalkers you control have "No more than one creature can attack this planeswalker each combat." {T}: Target creature with a +1/+1 counter on it gains flying until end of turn.

Legendary Creature — Illusion

Partner with Pir, Imaginative Rascal (When this creature enters, target player may put Pir into their hand from their library, then shuffle.) Whenever you draw a card, put a +1/+1 counter on Toothy. When Toothy leaves the battlefield, draw a card for each +1/+1 counter on it.

Creature — Human Soldier

Vigilance (Attacking doesn't cause this creature to tap.) Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

Creature — Spirit

Flying When this creature enters, tap target creature an opponent controls. Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, tap target creature that player controls.

Sorcery

As an additional cost to cast this spell, sacrifice a creature. Target player discards a number of cards equal to the sacrificed creature's power.