Matt, Impetuous Initiate

Whenever you cast a red spell, Matt, Impetuous Initiate deals damage to target creature or planeswalker equal to the casted spell's converted
mana cost.
Whenever you cast a blue spell, you may draw
cards equal the number of {u} in its mana cost.
Whenever an opponent casts an instant or sorcery spell, add {u/r}. That mana does not empty
as steps and phases end.