#Testing Karn, Silver Golem. Target is a Tower of Champions.
#Karn, Silver Golem's ability:"{1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost until end of turn. (That artifact retains its abilities.)"
[INIT]
FIRSTMAIN
[PLAYER1]
hand:Reprisal,Tundra
inplay:Toymaker,Hedron Matrix
manapool:{W}{W}{W}
[PLAYER2]
[DO]
Toymaker
Tundra
Hedron Matrix
Reprisal
Hedron Matrix
[ASSERT]
FIRSTMAIN
[PLAYER1]
inplay:Toymaker
graveyard:Hedron Matrix,Reprisal,Tundra
manapool:{0}
[PLAYER2]
[END]