Whenever Hapatra deals combat damage to a player, you may put a -1/-1 counter on target creature. Whenever you put one or more -1/-1 counters on a creature, create a 1/1 green Snake creature token with deathtouch.

As an additional cost to cast this spell, pay X life. All creatures get -X/-X until end of turn.

Whenever you put one or more -1/-1 counters on a creature, create that many 1/1 black Insect creature tokens.