Jodah, the Unifier (Showcase Textured) [Dominaria United]

Legendary creatures you control get +X/+X where X is the number of legendary creatures you control.

Whenever you cast a legendary spell from your hand, exile cards from the top of your library until you exile a legendary nonland card with less mana value. You can cast this card without paying its mana cost. Put the rest on the bottom of your library in a random order.