Can Crave Golem attack itself?
No, per normal attack restrictions (which the Crave Golem respects).
Does it use normal targeting rules when attacking?
Yes, except that it may attack other allied minions if they happen to be the chosen target. It still cannot attack Airborne or Stealth units unless it gains a special ability that allows it to do so.
How do I properly resolve this ability?
First, identify all the minions that Crave Golem can attack within its range of motion. If there are one or more such minions: Randomly pick one, then move (if needed), and attack it. This counts as a normal and may be defended. For example, if 's one with and another without , it will the non- 100% of the time (unless somehow gained ). If are no such minions: Imagine the had unlimited . Are any minions it could now? If not, it doesn't and the is over. If so, take one toward the that requires the fewest steps to reach. ('s controller's choice if tied.) This cannot be intercepted.
Does it tap to take a step or attack?
No.
When it attacks, does the targeted unit strike back?
Yes.
When it attacks, do normal combat rules apply with defending?
Yes.
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