Submerge

This spell costs less to cast if you control at least two creatures that share a creature type.

Put target nonland permanent into its owner's library second from the top.

This spell costs less to cast if it targets an attacking creature.

Put target creature into its owner's library second from the top.

Return target spell or nonland permanent an opponent controls to its owner's hand. You may cast an instant or sorcery spell with equal or lesser mana value from your hand without paying its mana cost.

If an opponent controls a Mountain and you control an Island, you may cast this spell without paying its mana cost.

Flying

If an opponent had two or more creatures enter the battlefield under their control this turn, you may pay rather than pay this spell's mana cost.

Return two target creatures to their owners' hands.

This spell costs less to cast if a creature is attacking you.

The owner of target spell or creature puts it on their choice of the top or bottom of their library.