Whenever you cast a creature spell that has an Adventure, Garenbrig Squire gets +1/+1 until end of turn. (It doesn’t need to have gone on the adventure first.)
"Find him a weapon as big as his dreams."n—Yorvo, lord of Garenbrig
Garenbrig Squire's ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered.
04-10-2019
wotc
An effect may refer to a card, spell, or permanent that "has an Adventure." This refers to a card, spell, or permanent that has an adventurer card's set of alternative characteristics, even if they're not being used and even if that card was never cast as an Adventure.
04-10-2019
wotc
If an effect refers to a card, spell, or permanent that has an Adventure, it won't find an instant or sorcery spell on the stack that's been cast as an Adventure.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.