Mister Mushroom's Ascent

As an additional cost to cast this spell, exile any
number of creature cards from your
graveyard. Search your library for a creature
card with mana value X, where X is the total
combined mana value of the exiled
creatures, then put it into your graveyard.
That card gains Dream as long as it is in your
graveyard.

Caps and shells may fall to dust, But Mister
Mushroom readjusts.