Guildpact

Ulasht, the Hate Seed enters the battlefield with a +1/+1 counter on it for each other red creature you control and a +1/+1 counter on it for each ...

Sacrifice Goblin Flectomancer: You may change the targets of target instant or sorcery spell.

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 ...

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

{R}, Sacrifice a creature: Scorched Rusalka deals 1 damage to target player or planeswalker.

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.) {R}, {T}: Attacking cr...

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.) Pyromati...

When Tin Street Hooligan enters the battlefield, if {G} was spent to cast it, destroy target artifact.

Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters the battlefield with three +1/+1 counters on it.) Flying {R}{R}{R}: ...

Parallectric Feedback deals damage to target spell's controller equal to that spell's mana value.

When Ogre Savant enters the battlefield, if {U} was spent to cast it, return target creature to its owner's hand.

{T}: Living Inferno deals damage equal to its power divided as you choose among any number of target creatures. Each of those creatures deals damag...

If Leyline of Lightning is in your opening hand, you may begin the game with it on the battlefield. Whenever you cast a spell, you may pay {1}. If ...

Enchant creature Enchanted creature has "{T}: This creature deals 1 damage to any target." {1}{U}: Return Hypervolt Grasp to its owner's hand.

First strike {3}{G}: Ghor-Clan Bloodscale gets +2/+2 until end of turn. Activate only once each turn.

Enchant creature Creatures you control that are enchanted get +1/+1 and have first strike.

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

({R/G} can be paid with either {R} or {G}.) Sacrifice Wild Cantor: Add one mana of any color.

({U/R} can be paid with either {U} or {R}.) When Petrahydrox becomes the target of a spell or ability, return Petrahydrox to its owner's hand.

({U/R} can be paid with either {U} or {R}.) {2}{U}: Copy target instant spell you control with mana value 2 or less. You may choose new targets for...

({R/G} can be paid with either {R} or {G}.) {3}{R}, Sacrifice a land: Gruul Guildmage deals 2 damage to target player or planeswalker. {3}{G}: Targ...

({R/G} can be paid with either {R} or {G}.) Trample; haste; shroud (This creature can't be the target of spells or abilities.)

({U/R} can be paid with either {U} or {R}.) Flying Each instant and sorcery spell you cast has replicate. The replicate cost is equal to its mana c...

Whenever Yore-Tiller Nephilim attacks, return target creature card from your graveyard to the battlefield tapped and attacking.