You choose that target as you cast Channel Harm, not at the time it prevents damage
This is a great option if you have most of a deck and dont want to shell out forty dollars for a Demonic Tutor or other pricey cards
If you've been collecting Pokmon cards for a while, you've probably looked at some of your favorites and thought, "Is it really worth getting this one graded?" Grading takes time and money, and not every card is right for it
I like him as a one-sided Fecundity in EDH but hes too much of a liability for Standard and that will set his price
But now rather than simply transforming any relevant werewolf cards on the battlefield, this trigger flips an overarching day/night tracker to the appropriate side for all players
Modern's immediate selection cantrips are notably less powerful than those three, but far from unplayable