Guildpact

Enchant creature Enchanted creature can't attack or block. Enchanted creature has "At the beginning of your upkeep, you lose 1 life."

This spell can't be countered. Bloodthirst X (This creature enters with X +1/+1 counters on it, where X is the damage dealt to your opponents this ...

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

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

{W}, {T}: Tap target creature.

{T}: Add {C}. {3}{W}{B}, {T}: Target player loses 1 life and you gain 1 life.

{1}, {T}: Add {W}{B}.

Haunt (When this creature dies, exile it haunting target creature.) When this creature enters or the creature it haunts dies, choose one — • Creatu...

{2}{W}: Target player gains 1 life. {2}{B}: Each player loses 1 life.

Haunt (When this creature dies, exile it haunting target creature.) When this creature enters or the creature it haunts dies, destroy target creatu...

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {W}{B}.

Defender (This creature can't attack.) As this creature enters, choose a color. This creature has protection from the chosen color.

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

{T}: Add {C}. {2}{U}{R}, {T}: Exile the top card of your library. Until your next turn, you may cast it if it's an instant or sorcery spell.

Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. {T}: Draw a card.

Enchant creature Creatures you control that are enchanted get +1/+1. If a creature you control that's enchanted would die, return it to its owner's...

({W/B} can be paid with either {W} or {B}.) Flying Whenever this creature deals damage, you gain that much life.

Destroy target creature or enchantment.

{2}, {T}: Exile target card from a graveyard. {2}{W}{B}, {T}, Sacrifice this artifact: Exile target nonland card from a graveyard, all other cards ...

{3}: This artifact becomes a copy of target artifact until end of turn. {1}{U}{R}: This artifact becomes a copy of target artifact, except it has t...

Replicate {3}{U} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.) Choose t...

{W}, Sacrifice a creature: Target creature can't attack this turn.

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

Vigilance {4}{W}: This creature gets +1/+2 until end of turn.