Beacon of Immortality

Double target player's life total. Shuffle Beacon of Immortality into its owner's library.

Merfolk Sovereign

Other Merfolk creatures you control get +1/+1.
{T}: Target Merfolk creature can't be blocked this turn.

Threads of Disloyalty

Enchant creature with mana value 2 or less
You control enchanted creature.

Time Warp

Target player takes an extra turn after this one.

Unsummon

Return target creature to its owner's hand.

Vow of Flight

Enchant creature
Enchanted creature gets +2/+2, has flying, and can't attack you or planeswalkers you control.

Bloodbond Vampire

Whenever you gain life, put a +1/+1 counter on this creature.

Child of Night

Coat with Venom

Target creature gets +1/+2 and gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Doom Blade

Innocent Blood

Each player sacrifices a creature of their choice.

Day of Judgment

Necropolis Regent

Flying
Whenever a creature you control deals combat damage to a player, put that many +1/+1 counters on it.

Urge to Feed

Target creature gets -3/-3 until end of turn. You may tap any number of untapped Vampire creatures you control. If you do, put a +1/+1 counter on each of those Vampires.

Vampire Interloper

Vampire Nighthawk

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Explorers of Ixalan