Edison Format · March 2010
Returning the removed monster to play is not a Special Summon. "Slip of Fortune" targets 2 monsters: the attacking monster and the attack target monster.
If the monster being attacked is removed from the field by an effect Chained to "Slip of Fortune" the attack will still be negated.
If the monster being attacked is in face-down Defense Position, "Slip of Fortune" will remove it from play face-down and return it to play in face-down Defense Position.
Returning the removed monster to play is not a Special Summon.
"Slip of Fortune" targets 2 monsters: the attacking monster and the attack target monster.