Conversely, the triggered ability created by the chapter III ability will trigger whenever any Elf you control attacks that turn, even if you didn't control that Elf as the chapter III ability resolved
In front of both players are 10 slots
There are other ways to deal with monsters in terms of cards that might despawn them, stop them coming into existence in the first place, and of course the occasional scenario specific methods like those found in The House Always Wins from the Dunwich Legacy core
Notably, there is a relevant price difference between the foil and non-foil and foil iterations of this card, as the foil versions seem to be going for about $50-60 right now
If the result is Tails, the following effects are negated until your next Standby Phase: When you Summon an "Arcana Force" monster, choose which effect to apply without tossing a coin