Unmarked Grave costs 1 more mana, is sorcery, and is restricted to nonlegendary cards (nice flavor btw), so it's not going into all Graveyard decks, but 2 mana tutor is still a great rate for decks looking to dredge up nonlegendary cards
As for damages, they are prevented, i.e
Huatli, the Sun's Heart A champion of the ancient ways, who sees strength not in aggression, but in enduranceturning sheer willpower into overwhelming force
From a great bonfire at the dawn of time, the first Gruul kindled their rage
Any Elf attacking will always cause it to untap (assuming you didn't already untap it before) and can lead to a very threatening Elf board very quickly.