Card text
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Official rulings
3 rulings · in English, source ScryfallThis scheme's first ability isn't a mana ability. Opponents may respond to it before you have that mana.
2017-06-13 · Wizards of the CoastThis scheme adds mana during your precombat main phase. If you don't spend it before you move to your combat step, it will be lost as your main phase ends.
2017-06-13 · Wizards of the CoastThe number of lands you control is checked as you set this scheme in motion and again as its second ability resolves. Once this scheme has been set in motion, you can't play a land or use an effect to put one onto the battlefield before the second ability could trigger.
2017-06-13 · Wizards of the CoastAll printings