Heres what I found: Adventurers' Guildhouse Animate Dead Bag of Holding Cartographer's Survey Chain Lightning City of Brass Clone Commune with Nature Cone of Flame Counterspell Earthbind Fabricate Fireball Gaseous Form Lightning Bolt Mirror Image Polymorph Resurrection Ring of Three Wishes Underdark Beholder Universal Solvent There's also Kharis & the Beholder, another Heroes of the Realm card from 2018 with a clear D&D influence (check that stylized ampersand in the card name!)
We can look up all the cards that mention planeswalker (minus those cards that are destroying or damaging them), and thatll get us a handful of options, mostly in white
Its good versus Cascade decks, Underworld Breach (without the ability to cast zero cmc spells over and over, they cant mill themselves and cast Thassas Oracle for the win), and to some extent Amulet (Chalice counters Summoners Pact)
Keep the pressure on with a powerful lineup
However, its a great alternative to the kind of strategy that Perdita, Devoted Mother offers, providing players with a way of getting a very powerful card out and getting any character cards theyve lost that theyd like to play again back into rotation.
Alesha is great if you are planning on being aggressive in combat but if you have a slower game plan in mind she lacks the suitability to reach that stand alone power threshold