SR: 12 types
Thankfully, lands-matter decks have been a staple of Commander for quite some time, with plenty of generic support that also works with Deserts
Ancient Imprint Put damage counters on your opponent's Active Pokmon until its remaining HP is 60
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(1) If you control a Brave Token: Special Summon up to 2 monsters with different names from your hand and/or GY (but banish them if they leave the field), then you can equip 1 Equip Spell in your hand or GY, that specifically lists the Token Brave Token in its text, to an appropriate monster you control
The widely accepted baseline is 1012 ramp pieces in a 100-card Commander deck, alongside ~37 lands