Ardenvale Tactician

If an object becomes a copy of an object that has an Adventure, the copy also has an Adventure. If it changes zones, it will either cease to exist (if it's a token) or cease to be a copy (if it's a nontoken permanent), and so you won't be able to cast it as an Adventure.

If two targets are chosen for Dizzying Swoop and one of them becomes an illegal target but not the other, the legal target will be tapped and Dizzying Swoop will be exiled. If both targets are illegal, Dizzying Swoop will be put into your graveyard.

If you cast an adventurer card as an Adventure, use only its alternative characteristics to determine whether it's legal to cast that spell. For example, if Giant Killer is exiled with the last ability of Vivien, Champion of the Wilds, you can't cast it as Chop Down.