Helob

{1}, {t}: Summon a 0/1 creature token
When you sacrafice this creature token, gain
the following depending on the mana spent
•{w}: Gain 1 life
•{g}: Spend {1} less mana to summon a spell
•{u}: Tap target creature
{bull}{b}: Put a -1 /-0 counter on target creature
{bull}{r}: Deal 1 damage to target creature