#Testing Invigorate by casting it alternatively (= opponent gains 3 life).
#If you control a Forest, you may have an opponent gain 3 life rather than pay Invigorate's mana cost. -- Target creature gets +4/+4 until end of turn.
[INIT]
FIRSTMAIN
[PLAYER1]
hand:Invigorate
inplay:Raging Goblin,Forest
manapool:{0}
[PLAYER2]
inplay:Serra Angel
life:20
[DO]
Invigorate
Raging Goblin
next
#combatbegins
next
#attackers
Raging Goblin
next
#blockers
Serra Angel
next
#combatdamage
next
#combatend
[ASSERT]
COMBATEND
[PLAYER1]
inplay:Raging Goblin,Forest
graveyard:Invigorate
manapool:{0}
[PLAYER2]
life:23
graveyard:Serra Angel
[END]