Hormagaunt

Haste, Instinctive Behaviour: Kill
As additional cost to cast this spell, pay X,
where X is number of Hormagaunts already
under your control, divided by two, rounded
down.
{1}{t}: Create a 1/1 Hormagaunt creature token
with haste and brood telepathy.
Swarm (For every creature with this creatures
name, create a copy of this creature as a token.)
Brood Telepathy