This Banshee used to be pretty heavily played at the kitchen table with its 2/2 flying body that gives a dork -2/-2 until the end of the turn which can kill loads of things like Flametongue Kavu and Eternal Witness and Birds of Paradise and Esper Sentinel
Currently, a near-mint non-foil Kaldheim copy of Elvish Warmaster will set you back around $2.10, not including shipping
Bulk purchases (2-packs or 3-packs bundled together) offer additional per-unit discounts unavailable through traditional retailers
In the right go-wide deck, such as Elves or Goblins, you can easily get boosts in the +4/+4 to +5+5 range going, too, which are very hard to deal with
The main idea would be to return cards to the top of the opponent's deck with, for example, a Memory Lapse and then use some spell that allows you to exile the top card
With this cheap blocker, decks like Purple Luffy have found themselves back at the top of the competitive meta