地
岩浆爪流域须横置进战场。

:加

或

到你的法术力池中。



:直到回合结束,岩浆爪流域成为2/2黑红双色的元素生物,并具有「

:此生物得+X/+0直到回合结束。」 它仍然是地。
When a land becomes a creature, that doesn't count as having a creature enter. The permanent was already on the battlefield; it only changed its types. Abilities that trigger whenever a creature enters won't trigger.
A land that becomes a creature may be affected by "summoning sickness." You can't attack with it or use any of its
abilities (including its mana abilities) unless it began your most recent turn on the battlefield under your control. Note that summoning sickness cares about when that permanent came under your control, not when it became a creature.