法术
催命2(于你施放此咒语时,你可以牺牲一个力量等于或大于2的生物。当你如此作时,复制此咒语。)
派出一个4/3黑色食人魔/战士衍生生物。
The copy of the spell is created on the stack, so it's not “cast.” Abilities that trigger when a player casts a spell won't trigger.
Casualty N means “As an additional cost to cast this spell, you may sacrifice a creature with power N or greater.” and “When you cast this spell, if a casualty cost was paid for it, copy it. If the spell has any targets, you may choose new targets for the copy.”
If you pay the casualty cost of a spell, the copy will resolve before the original spell.
You may sacrifice only one creature to pay a spell's casualty cost, and you copy the spell only once.