When Construction Arsonist enters, you may choose an instant or sorcery card in your hand. If you do, that card perpetually incorporates {R} and gains "When you cast this spell, it deals 2 damage to each opponent."

Whenever you cast a multicolored spell, Construction Arsonist gets +1/+1 until end of turn for each of that spell's colors.

When Construction Arsonist enters, you may choose an instant or sorcery card in your hand. If you do, that card perpetually incorporates {R} and gains "When you cast this spell, it deals 2 damage to each opponent."

Whenever you cast a multicolored spell, Construction Arsonist gets +1/+1 until end of turn for each of that spell's colors.

当工地纵火鬼进场时，你可以选择你手上的一张瞬间或法术牌。若你如此作，则该牌永久添补{R}且获得「当你施放此咒语时，它向每位对手各造成2点伤害。」

每当你施放多色咒语时，该咒语每有一种颜色，工地纵火鬼便得+1/+1直到回合结束。