If you are at all interested in building your own custom damage ping deck, Id recommended getting started here with this deck
That alone sounds decent, but once you have Delirium, Channeler becomes a significant threat on its own as a three-power Flier
Combine this with an inflated interested in collectible TCGs' rarest targets spurred by the pandemic and, while nowhere near its peak, maintaining a fair bit of popularity on streams and YouTube
3 Rarity: Uncommon TYPE: Legendary Creature SUBTYPE: Wizard CMC: 4 Mana cost: USD: $0.32 EUR: 0.16 TIX: 0.03 EDHREC RANK: 3234 (2/2) Flying, deathtouch Whenever you cast a noncreature spell, Black Waltz No
Meanwhile, Cyclonic Rift is at a whopping $50, making it the most valuable card in the whole collection of drops
One underappreciated option is to name the card that would cause a problem right now rather than trying to stop a long-term threat