Pouncing Shoreshark - [Showcase] The List (PLIST) Board Game Domain — {T}: Add X

Domain — {T}: Add X mana in any combination of colors

Cascade (When you cast this spell

devouring both flesh and stone

haste Whenever Goldspan Dragon attacks or becomes the target of a spell

This is the Atarka Spindown Life Counter from the Dragons of Tarkir set

Pouncing Shoreshark - [Showcase] The List (PLIST) Board Game Domain — {T}: Add XMutate {3}{U} (If you cast this spell for its mutate cost, put it over or under target non Human creature you own. They mutate into the creature on top plus all abilities from under it.) Flash Whenever this creature mutates, you may return target creature an opponent controls to its owner's hand.