Marble Dice

You may only cast creature, sorcery, and instant spells.
Whenever you cast an instant or sorcery spell, roll a six sided dice. If the result is even, it gains rebound. If odd, return it to your hand and you lose 4 life.
When you cast a creature spell, roll a six sided dice. If the result is even, create a token that's a copy of that create. If odd, return it to your hand and you lose 4 life.