#Testing prevent:*number* keyword.
#Prevent all damage that would be dealt to you and creatures you control this turn.
[INIT]
FIRSTMAIN
[PLAYER1]
hand:lightning bolt,safe passage,pyroclasm
manapool:{3}{R}{R}{W}
inplay:grizzly bears,runeclaw bears,barbary apes
[PLAYER2]
inplay:headless horseman
[DO]
safe passage
pyroclasm
lightning bolt
p1
[ASSERT]
FIRSTMAIN
[PLAYER1]
life:20
inplay:grizzly bears,runeclaw bears,barbary apes
graveyard:lightning bolt,safe passage,pyroclasm
[PLAYER2]
graveyard:headless horseman
life:20
[END]