If you choose the second mode and the creature you don't control is not a legal target as Archdruid's Charm resolves, you'll still put a +1/+1 counter on your creature

$0.99 Saruman, the White Hand The Lord of the Rings: Tales of Middle-earth Commander Decks $3.99 Lord of the Nazgul The Lord of the Rings: Tales of Middle-earth Commander Decks $0.35 Saruman's Trickery The Lord of the Rings: Tales of Middle-earth $0.35 Birthday Escape The Lord of the Rings: Tales of Middle-earth $0.35 March from the Black Gate The Lord of the Rings: Tales of Middle-earth $0.35 Claim the Precious The Lord of the Rings: Tales of Middle-earth $2.29 In the Darkness Bind Them The Lord of the Rings: Tales of Middle-earth Commander Decks $1.99 Barad-dur The Lord of the Rings: Tales of Middle-earth $2.49 One Ring to Rule Them All The Lord of the Rings: Tales of Middle-earth $9.99 Witch-king of Angmar The Lord of the Rings: Tales of Middle-earth $0.35 Mauhur, Uruk-hai Captain The Lord of the Rings: Tales of Middle-earth $0.35 Sam's Desperate Rescue The Lord of the Rings: Tales of Middle-earth 0 results found

The prices of these cards come from TCGplayer and are subject to change over time
Magic: The Gatherings Fallout crossover includes TCG forms of Dogmeat, radstorms, Caesar and the Mothman War never changes, but MTG sure does
If you have multiple of the same card, they count as different cards
One big feature: retro-frame shock lands and spells