Faust, Underground Doctor

When you cast a spell, you may decide to pay
{4} less to cast it. If you do, that spell loses all abilities and gains "Cascade, cascade". If it was
a creature spell, it becomes a 1/1 colorless
Mini-Faust token.

If no spells were casted during Cascade, deal X damage to each opponent and gain X life where X
is the mana value of the spell that triggered
Cascade.