@The-Gremlin-Lord As far as red decks go, I've found Scab-Clan Berserker & Eidolon of the Great Revel pretty punishing in the vintage metagame.
Yes, the SMIP duo spoke of it's possible favourable interactions with Lion's Eye Diamond, Mox Diamond, and even Thirst for Knowledge..
While in planeswalker form you would need a bounce spell to deal with him, but if used to attack (in his 4/4 human soldier form) he becomes vulnerable also to swords, path, or any exile spell.
I'm the_unseen on MTGO, live in EST zone. Relatively new to MTG, started Vintage a few months ago. Have a few T1 decks, including various Shops iterations.