Flying, haste

Whenever this creature deals combat damage to a player, you gain 1 life and draw a card.

Flying

Whenever Oros deals combat damage to a player, you may pay . If you do, Oros deals 3 damage to each nonwhite creature.

Flying

Whenever Vorosh deals combat damage to a player, you may pay . If you do, put six +1/+1 counters on Vorosh.

Flying, haste

Whenever a creature dealt damage by Garza Zol this turn dies, put a +1/+1 counter on Garza Zol.

Whenever Garza Zol deals combat damage to a player, you may draw a card.

Flying

Whenever Crosis deals combat damage to a player, you may pay . If you do, choose a color, then that player reveals their hand and discards all cards of that color.

Flying

Whenever Niv-Mizzet deals damage to a player, you may draw a card.

: Niv-Mizzet deals 1 damage to any target.

Flying

Whenever this creature deals combat damage to a player, you may pay . If you do, create a 2/2 black Zombie creature token and each opponent mills two cards.

Trample

Whenever this creature deals damage to an opponent, you draw a card and that opponent discards a card.

Whenever this creature deals combat damage to a player, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

Slivers you control have flying and "Whenever you draw a card, this creature deals 1 damage to any target" and ": Draw a card."

Flying

Whenever Teneb deals combat damage to a player, you may pay . If you do, put target creature card from a graveyard onto the battlefield under your control.

First strike

Whenever this creature deals combat damage to a player, that player discards a card at random.

: Regenerate this creature.

Flying

Whenever Dromar deals combat damage to a player, you may pay . If you do, choose a color, then return all creatures of that color to their owners' hands.

Flying

Whenever Numot deals combat damage to a player, you may pay . If you do, destroy up to two target lands.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Trample

Whenever this creature deals combat damage to a player, return target creature card with mutate from your graveyard to your hand.

Ward—Sacrifice a legendary artifact or legendary creature.

Whenever an opponent casts a spell, amass Orcs 1.

Whenever an Army you control deals combat damage to a player, the Ring tempts you.

Whenever the Ring tempts you, you may discard your hand. If you do, draw four cards.

Flying

When this creature enters, it deals 2 damage to any target and you gain 2 life. If a player is dealt damage this way, they discard a card.

Flying

Whenever Rith deals combat damage to a player, you may pay . If you do, choose a color, then create a 1/1 green Saproling creature token for each permanent of that color.