For context on just how under the radar Brainstorm was, heres the eventual champion and shortlist Hall of Fame candidate, Justin Garys U/R list from that same event: Creatures (12) Lands (22) Spells (26) 2 Nevinyrral's Disk 4 Counterspell 4 Dissipate 4 Force of Will 3 Earthquake 3 Disintegrate 2 Incinerate 2 Serrated Arrows 2 Binding Grasp Sideboard Super rad deck, to be sure, but definitely could have benefited from a playset of Brainstorms
Card Details Set 2018 Heroes of the Realm (PH18) Rarity mythic Colors RUW Artist Olena Richards Collector # 4
I imagine cards with hexproof and indestructible counters are invaluable for this strategy
It's powerful and inaccessible, so definitely worth disclosing
Fire Sprites isn't the only creature that does this, but it's also one of the first few 'cross-colour' aid cards, with the Fire Sprites providing red mana
Open a pack and you get some cards