Castle Garenbrig's second ability by paying and tapping it, adding eighteen that can only be spent to cast creature spells or to activate abilities of creatures.
Activate
Wakeroot Elemental by paying , untapping
Castle Garenbrig and causing it to become a 5/5 Elemental creature with haste that's still a land.
Repeat.
Notes
Once you have infinite green mana, you can use
Wakeroot Elemental to untap any other land(s) infinitely.
Results
Infinite mana lands you control can produce.
Infinite green mana that can only be spent to activate abilities of creatures.
Infinite green mana that can only be spent to cast creature spells.
Infinite untap of lands you control.
Metadata
Bracket tag
ExhibitionBracket 1+
For any deck
1
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5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.