Its great for Control strategies looking to refill their hand while also presenting a powerful threat (and blocker)
Charlotte Katakuri (SP) $444.97 Everyone thought that this Katakuri was a sure hit target for the banlist, but rather it was only pair-banned to keep UP Luffy in check from making the game completely unplayable
Keep in mind that the list of what protection defends a card from is very clear
Slime Against Humanity offers a slow but powerful Ooze token generation strategy using cards in the graveyard or exile
Just like Jhoira earlier, I like him casting fat stuff for five mana, like Insurrection, Eldrazi Titans like Ulamog, Archangel's Light, Plague Wind, Searing Wind, the Ultimatum Cycle like Genesis Ultimatum, Conflux, Apex Devastator, Progenitus, Avacyn, Angel of Hope, the Ancient Dragon cycle, and loads more