I mean to stress, this isn't a gimmick deck in spite of its veneer of being so, and there's a ton more here than just its founding combo
At the beginning of your upkeep, you may put a Doctor creature card from your hand onto the battlefield
You can copy simple yet powerful abilities, like planeswalker abilities and anything coming off historically powerful cards like Aetherflux Reservoir and Portal to Phyrexia
They can still miss variants, sleeve glare, language differences, and condition issues
Vrondiss, Rage of Ancients Vrondiss, Rage of Ancients brings a more dangerous form of synergy
Cycling is different: It lets you pay a cost to discard the card and draw without ever casting it