Chrome Host Seedshark
Creature — Phyrexian Shark
Flying
Whenever you cast a noncreature spell, incubate X, where X is that spell's mana value.
Donato Giancola
Rulings
If the noncreature spell has {X} in its mana cost, use the value chosen for X when calculating that spell's mana value.
(wotc • 2023-04-14)
Printings
Rulings
If the noncreature spell has {X} in its mana cost, use the value chosen for X when calculating that spell's mana value.
(wotc • 2023-04-14)