So i've recently gotten back into the yugioh scene and i decided to build a Fluffals deck because i love the concept of the search fusion engine. But i do have a couple of questions, can i use King of the Swamp as frightfur monster to fusion summon Sabre-tooth or Chimera? And as for chimera's first effect, when it says that your opponent cannot activate cards or effects until the end of the damage step. So does that mean, for example: If someone activated mirror force that it would be destroyed after the damage step or they cant activate any cards or effects during the battle stage at all? Sorry if the second question is worded a bit weird but i cant think of another to way to word it.