Yukie Tajima

Sorin, Vengeful Bloodlord

During your turn, creatures and planeswalkers you control have lifelink.
[+2]: Sorin deals 1 damage to target player or planeswalker.
[−X]: Return target creature card with mana value X from your graveyard to the battlefield. That creature is a Vampire in addition to its other types.

The Theorist, Jace Beleren

At the beginning of each opponent's draw step, you draw a card.
[+1]: Create a 1/1 blue Illusion creature token.
[−2]: For each opponent, return up to one target artifact or creature that player controls to its owner's hand.
[−6]: Draw three cards. Then put X +1/+1 counters on each creature you control, where X is the number of cards in your hand.

Nahiri, Storm of Stone

During your turn, creatures you control have first strike and equip abilities you activate cost {1} less to activate.
[−X]: Nahiri deals X damage to target tapped creature.