Mysterious Pathlighter

Creature — Faerie • Mana cost: {2}{W} • Throne of Eldraine • Uncommon

Flying
Each creature you control that has an Adventure enters with an additional +1/+1 counter on it. (It doesn't need to have gone on the adventure first.)

For good or ill, most fae can't resist meddling in the adventures of any knight they meet.

Illustrated by Kimonas Theodossiou.