4 Oct 2019
If the opponent dealt damage controls no planeswalkers, Questing Beast's last ability simply does nothing.
4 Oct 2019
Questing Beast only stops combat damage from being prevented by effects that specifically use the word “prevent.”
4 Oct 2019
The damage Questing Beast deals to the target planeswalker as its last ability resolves isn't combat damage.
4 Oct 2019
Once a creature with power 3 or greater has blocked this creature, changing the power of the blocking creature won't cause this creature to become unblocked.