AddIronheart, Clever Champion to the mix, and those artifacts gain Improvise, too, letting you use them for paying mana costs
Do the same for the inside of your inner sleeve
For example, say you control three lands, one opponent controls four lands, and another opponent controls five lands
This red and black spell lets you exile a single creature card from your graveyard
The risk for competitive SRs: If you held OP-16 SR leaders (Akainu, Yamato, Enel in their standard SR prints) expecting grading gains, OP-17 releasing a stronger leader in the same color may reduce competitive demand for those cards
This method might work at home, where you have time and space to dedicate to the process