The Cursed Eternities

Whenever a player casts an instant, sorcery, or enchantment card, if that player has cast 4 or
more spells of that type before this one, that
player takes a shot or pays {p/c}{p/c}. This ability
only triggers twice per turn.
Lands have "{t}: Add one mana of any color.
Spend this mana only to cast a non-creature
spell."