A friend of mine had a black/white deck that could loop you to death, it was no fun to play against, soon as he got the cards out he needed, he could (IIRC) banish a creature to the graveyard, then bring it back, repeatedly, and one of those actions inflicted damage on the opponent.
It was clever, but also beardy AF, to use a phrase from my days of WH40K
It was clever, but also beardy AF, to use a phrase from my days of WH40K