#Test: Parse X cost
[INIT]
FIRSTMAIN
[PLAYER1]
manapool:{1}{2}{R}{R}
inplay:grizzly bears,dragon engine
hand:Flowstone slide
[PLAYER2]
[DO]
Flowstone slide
choice 1
next
#begin
next
#attackers
grizzly bears
dragon engine
next
#blockers
next
#damage
[ASSERT]
COMBATDAMAGE
[PLAYER1]
inplay:grizzly bears,dragon engine
graveyard:Flowstone slide
[PLAYER2]
life:15
[END]