Riftbound Unit: Shen, Scourge of Shadows. When I hold, if there is exactly one other unit you control here, draw 1.
Riftbound Unit: Atakhan. You may kill a friendly unit as an additional cost to play me. If you do, I cost [1] less for each Energy it costs and [Y] less for each Power it costs. [Ganking] (I can move from battlefield to battlefield.) When I attack, the defender must kill one of their units here.
Riftbound Unit: Rek'Sai, Swarm Queen. When I attack, you may reveal the top 2 cards of your Main Deck. You may play one. Then recycle the rest. If the played card is a unit, you may play it here.
Riftbound Spell: Morbid Return. [Action] (Play on your turn or in showdowns.) Return a unit from your trash to your hand.