Guildpact

At the beginning of your upkeep, each opponent loses 1 life. You gain life equal to the life lost this way.

Create X 1/1 white Pegasus creature tokens with flying, where X is your life total.

Izzet Boilerworks enters the battlefield tapped. When Izzet Boilerworks enters the battlefield, return a land you control to its owner's hand. {T...

Whenever you cast a spell, you may put two +1/+1 counters on Witch-Maw Nephilim. Whenever Witch-Maw Nephilim attacks, it gains trample until end of...

Trample Whenever Borborygmos deals combat damage to a player, put a +1/+1 counter on each creature you control.

Target opponent reveals their hand. You choose a nonland card from it and exile that card.

Return target nonland permanent with mana value X to its owner's hand. Draw a card.

({T}: Add {U} or {R}.) As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.) Creatures with power l...

Destroy all enchantments target player controls.

When Vedalken Plotter enters the battlefield, exchange control of target land you control and target land an opponent controls.

If Leyline of the Void is in your opening hand, you may begin the game with it on the battlefield. If a card would be put into an opponent's gravey...

Whenever an opponent casts a spell, that player sacrifices a permanent unless they pay {1}.

When Ghost Council of Orzhova enters the battlefield, target opponent loses 1 life and you gain 1 life. {1}, Sacrifice a creature: Exile Ghost Cou...

Whenever Aetherplasm blocks a creature, you may return Aetherplasm to its owner's hand. If you do, you may put a creature card from your hand onto ...

Replicate {1}{R} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.) Target ...

When Vedalken Plotter enters the battlefield, exchange control of target land you control and target land an opponent controls.

Flying Haunt (When this creature dies, exile it haunting target creature.) When Belfry Spirit enters the battlefield or the creature it haunts dies...

You may have creatures you control assign their combat damage this turn as though they weren't blocked.

Nonbasic landwalk (This creature can't be blocked as long as defending player controls a nonbasic land.)

Whenever an opponent casts a spell, that player sacrifices a permanent unless they pay {1}.

Whenever a player activates an ability that isn't a mana ability, Burning-Tree Shaman deals 1 damage to that player.

({T}: Add {R} or {G}.) As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Reach (This creature can block creatures with flying.) As Silhana Starfletcher enters the battlefield, choose a color. {T}: Add one mana of the cho...