Domingus, Conjurer of chaos

This card can't be countered
When Domingus, Conjurer of Chaos enters to battlefield if you cast this spell using {b} mana,
target player discards a card. If you cast using {w} mana exiles target nonland permanent.
If you cast using {r} mana it deals 3 damages to
any target. If you cast using {u}, draw a card for
each {u} mana spent to cast it. If you cast using {g}, search a basic land type card and put it
onto battlefield tapped.