I've had multiple games in which i get down to like 1 to 8 life, and then on my draw step, a whole bunch of 3 to 7 damage asteroids just chain-self-cast themselves until the opponent is dead before i could take an action. It's a real giggle of a way for a game to end!
made me wanna cook up an mtg version, smth like
When this creature enters, shuffle three Explosive Runes cards into your deck. (Explosive Runes is an artifact token card with no mana cost, cycling 0, and “When this card is revealed from your hand or library, exile it. It deals 2 damage to each opponent.”)