Swarm of Flies

As an additional cost to cast Swarm of Flies sacrifice
any number of Blood tokens. For each blood token sacrificed this way deal 2 damage to any target, creatures dealt damage by Swarm of Flies take the
same amount of damage again at the next end of
turn
Releases a swarm of bloodflies before the caster to
assault foes. The vile swarm deals damage and builds
up onset of blood loss. This incantation can be cast
while in motion.