The other thing to keep in mind is that if there are no cards that can be exchanged, you still target those cards you were trying to change, but when it goes to resolve, it won't happen
If this card is destroyed, send the monster to your opponents graveyard
But since it is a Link Monster, it could be easily summoned as long as you can gather enough Link Materials for a Link-4
Now, obviously the Daemogoths trigger isnt your ideal trigger here, but its nice to have
Adventures in the Forgotten Realms Set Boosters contain: At least 1 rare or mythic rare card (approximately 27% of Set Boosters contain 2 rares or mythic rares, 3% contain 3, and it's even possible to open 4 though that's less than 1% of the time.) 1 Traditional foil card of any rarity 1 Rulebook, module, or borderless common or uncommoncheck out the Collecting Adventures in the Forgotten Realms article for details