You can order proxies from places like Printing Proxies
Be patient as the two stages it takes the most time in is research and ID, then the actual grading step
Unfortunately, the highest sale was only in LP condition, clocking in at $66.49, but leaving an uncertain ceiling for this card
Choke out your opponents resources, hit someone with Brago when their shields are down, blink as many of your permanents as you want to untap them and break parity (including Brago himself), then grind the table down or set up a combo to win the game as desired
Gastly - 7/12 #7Promo $14.14 Alolan Dugtrio - 11/12 #11Promo $9.61 Mankey - 8/12 #8Promo $7.52 Onix - 9/12 #9Promo $9.36 Caterpie - 1/12 #1Promo $13.86 Alolan Exeggutor - 2/12 #2Promo $7.21 Alolan Meowth - 10/12 #10Promo $14.71 Alolan Sandshrew - 4/12 #4Promo $8.11 Eevee - 12/12 #12Promo $18.13 Pikachu - 6/12 #6Promo $34.10
Put those cards onto the battlefield under your control