Magmablood Archaic

Magmablood Archaic's last ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.

If there are any alternative or additional costs to cast a spell with a converge ability, the colors of mana spent to pay those costs will count.

If you cast a spell with converge without spending any mana to cast it (perhaps because an effect allowed you to cast it without paying its mana cost), then the number of colors spent to cast it will be zero.