#2, Tap: Untap target attacking creature you control.
#  Prevent all combat damage that would be dealt to and dealt by that creature this turn.
[INIT]
COMBATATTACKERS
[PLAYER1]
inplay:grizzly bears,ebony horse,mountain,swamp
[PLAYER2]
inplay:hypnotic specter
[DO]
grizzly bears
next
hypnotic specter
next
yes
mountain
swamp
ebony horse
grizzly bears
endinterruption
next
[ASSERT]
COMBATEND
[PLAYER1]
inplay:grizzly bears,ebony horse,mountain,swamp
[PLAYER2]
inplay:hypnotic specter
[END]