Emrakul, the Promised End [Eldritch Moon] Anthologies Rhonas the Indomitable can't attack

Rhonas the Indomitable can't attack or block unless you control another creature with power 4 or greater

then exile a card from your hand

The gods known to the merfolk as Ula

" —Alfred

Emrakul, the Promised End [Eldritch Moon] Anthologies Rhonas the Indomitable can't attackSet: Eldritch Moon Type: Legendary Creature Eldrazi Rarity: Mythic Cost: {13} This spell costs {1} less to cast for each card type among cards in your graveyard. When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn. Flying, trample, protection from instants An enigma as vexing as life itself.