When you set this scheme in motion, add {U}{B}{R}.
When you set this scheme in motion, if you control six or more lands, you may search your library for a card with mana value 6 or greater, reveal it, put it into your hand, then shuffle.
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Rulings
13 Jun 2017
This scheme's first ability isn't a mana ability. Opponents may respond to it before you have that mana.
13 Jun 2017
This 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.
13 Jun 2017
The 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.