Summoning Circle

{b}: Create a 1/1 bat creature token with flying.
{1}{b}: Create a 2/2 black Zombie creature token
{3}{b}: Create a 5/5 black Demon token with flying
and trample
Siphon (When you cast a spell with Siphon, you
gain a number of blood counters equal to the spells converted mana cost. You lose the game if your life total is reduced to a number less than or equal to the number of blood counters you have.