Wizards revenge

Instant
Counter target spell.
If that spell is a sorcery, add up to X mana to your mana pool during your next main phase, where x is the converted mana cost of that sorcery.
''you put it in, I take it out''
Elvish grasp

Instant
Counter target spell.
If that spell is a creature , add up to X mana to your mana pool during your next main phase, where x is the converted mana cost of that creature.
Demonic balance

Instant
Counter target spell.
If that spell is an instant , add up to X mana to your mana pool during your next main phase, where x is the converted mana cost of that instant.
Soldier's Cunning

Instant
Counter target spell.
If that spell is an enchantment , add up to X mana to your mana pool during your next main phase, where x is the converted mana cost of that enchantment.
are they too powerfull? 3 mana hard counter, with possible extra mana?