mtg why are conspiracy cards banned Custom Cards' Marchesa, Schemer Complete abilities and potential rule tweaks Conspiracy - MTG Wiki

7 Ivy, Gleeful Spellthief Double The Spells Another Simic commander to try, Ivy, Gleeful Spellthief is a truly unique commander that can cause a lot of problems for your opponents

The rest of the options either make mana for a Limited purpose (Like Beastcaller Savant whose mana can only be used for creatures) or something like Servant of the Conduit that turns energy into any mana

Foxglove has lifelink, we can leverage that by boosting its power, giving us the ability to race better if an opponent is looking at player removal rather than commander removal

Alternatively, you can tap and sac them to grab a basic land represented by its cycling cost

Thats every single time

Its an over-statted 3-drop, a strong 5-drop, and a threat that needs an answer so you dont win the game