Twilight Ninja Getsuga, the Shogun

“You can Tribute Summon this card by Tributing 1 "Ninja" monster. If this card is in Attack Position: You can target 2 "Ninja" monsters in your GY, except "Twilight Ninja Getsuga, the Shogun"; change this card to Defense Position, and if you do, Special Summon those monsters. You can only use this effect of "Twilight Ninja Getsuga, the Shogun" once per turn.”