Whenever this creature or another Ally you control enters, you may have this creature deal damage to target creature equal to the number of Allies you control.

When you unlock this door, this Room deals damage equal to the number of cards in your hand to target creature an opponent controls.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Flying

When this creature enters, you may discard your hand and draw cards equal to the damage dealt to target opponent this turn.

Flying

: 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.

Trample

Whenever this creature deals combat damage to a player, you may discard all the cards in your hand. If you do, draw that many cards.

When this enchantment enters, your life total becomes 15.

At the beginning of your upkeep, this enchantment deals 15 damage to target creature an opponent controls and that creature deals damage equal to its power to you.

Flying

When this creature enters, it deals damage to any target equal to the number of Mountains you control.

First strike

When this creature enters, target opponent may have you draw three cards. If the player doesn't, you mill three cards, then this creature deals damage to that player equal to the total mana value of those cards.

Whenever this creature becomes blocked, you may have it deal damage equal to its power to target creature. If you do, this creature assigns no combat damage this turn.

Haste

Whenever another creature you control dies, it deals damage equal to its power to target player or planeswalker.

Enchant creature

Enchanted creature gets +3/+3 and has flying.

Whenever enchanted creature deals damage to a player, that player discards two cards.

Whenever this creature enters or attacks, discard a card, then seek a nonland card. When you discard a card this way, this creature deals damage equal to the discarded card's mana value to any target.

Whenever a creature you control enters, it deals damage equal to its power to any target.

When this creature enters, it deals 4 damage to each opponent.

Delirium — Whenever a source you control deals noncombat damage to an opponent, if there are four or more card types among cards in your graveyard, this creature deals that amount of damage to target creature that player controls.

Whenever this creature deals combat damage to a player, you may destroy target artifact that player controls.

Menace

Paradox — Whenever you cast a spell from anywhere other than your hand, this creature deals 3 damage to any target. Then put a +1/+1 counter on this creature.

When this creature dies, it deals damage equal to its power to each opponent.

Flying

Whenever this creature deals combat damage to a player, roll a d20. You create a number of Treasure tokens equal to the result.

Flying

Whenever this creature deals combat damage to a player, each player discards their hand, then draws seven cards.