mtg cards like smothering tithe FOIL from Ravnica Allegiance Magic the Gathering Proxy Until that moment 30 Great white cards released

The catch here is that you can just float a ton of mana, resolve Upheaval, then use what mana you have left to deploy mana rocks and threats

Solemn Simulacrum Solemn Simulacrum is an MTG mana ramp card with plenty of utility

Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.) Whenever this Vehicle becomes crewed, up to one other target Vehicle you control becomes an artifact creature until end of turn

Exile the rest

Its too slow for anything but Commander, but its excellent there as a source of many continuous effects: cast from exile, card draw, life loss, and so on

Theres also synergy with permanents that sacrifice themselves - you can sacrifice a permanent after this spell resolves to exile it