Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.
Whenever a Sliver creature you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays .
At the beginning of your end step, if you didn't activate a loyalty ability of a planeswalker this turn, you lose 2 life., : For each planeswalker you control, you may activate one of its loyalty abilities once this turn as though none of its loyalty abilities have been activated this turn.
Flying, trampleWhenever an opponent searches their library, that player sacrifices a creature of their choice and loses 10 life.Whenever another creature dies, put a +1/+1 counter on Ob Nixilis, Unshackled.
+1: Destroy another target planeswalker.+1: Create a 3/3 black Beast creature token with deathtouch.−3: Destroy target creature. You gain life equal to its toughness.−8: Target opponent gets an emblem with "Whenever a creature attacks you, it gets +5/+5 and gains trample until end of turn."
