you have a face down bottomless trap hole.

Your opponent summons elemental hero ice edge and activates its effect then he chains mask change to summon masked hero vapor.

Can you activate bottomless? Why or why not?

Answer by iNubz: it depends which effect of ice edge your talking about...
if its the destruction effect then you cant even chain mask change since its the damage calculation.......
if its the discard to attack directly then u can chain mask change and summon vapor. bottomless cant be chained because ice edge will resolve but without effect and bottomless will miss the timing