Since Majestic Mech Ohka is being used so commonly now, I better realease their ruling before you all make a mistake...
Whenever you activate Ohka and Goryu's effect to be tributed with LESS than it's normally required... then the monster's dead at EVERY end phase. This means if you Call of the Haunted Ohka, it dies at the end of the turn IF you used it's effect to summon him before. Otherwise, they're like other monsters and stay on the field until destroyed. 3nodding
