Instant speed sac outlets like Viscera Seer are best for this, so you can put the coin counter on your creature and sacrifice it right away
Thus, a multiple-Wheel deck of larger than average size could theoretically cast multiple Wheels in the space of a few turns to try to deck an opponent
Resourceful Defense is a pretty cool but narrow card, but Bane of Progress, Walking Ballista, and Damning Verdict are all pretty useful Commander cards
Champions Helm Champion's Helm offers great protection for your commander, and it's finally cheap thanks to some Commander Masters and Fallout reprints
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Since the main set is legal in all constructed formats, it makes sense to have mechanically unique cards for this purpose