The Reality Stone

Indestructible, equip {2}
When The Reality Stone enters the battlefield or
is equipped, put a changeling counter on target
creature. Equipped creature is a changeling and
gets +1/+1 equal to the greatest number of
creatures you control that share a creature type.
Pay {3}: target permanent, becomes an artifact, creature, or enchantment in addition to its other
types, until end of turn.