pokemon gx rainbow rare cards Darkrai-GX - 158/147 - Secret Colorless Solar Beam (110) Grass Grand Bloom The 10 Most Expensive Rainbow

There is even a lifegain deck in this format to take advantage of that ETB trigger

Seismitoad #36Rare $0.60 Seismitoad #42Rare $0.30 Seismitoad #35Rare $0.27 Seismitoad #117Rare $0.22 Seismitoad #46Rare $0.25 Seismitoad #90Rare $0.13 Seismitoad #52Uncommon $0.16 Seismitoad #21Uncommon $0.11 Seismitoad #25Uncommon $0.06 Seismitoad #39Uncommon $0.13 Reuniclus (53) #53Rare $0.79 Lilligant #5Rare $2.00 Kyurem #34Holo Rare $4.63 Heatmor #18Uncommon $0.33 Volcarona #21Rare $1.26 Cryogonal (32) #32Uncommon $0.39 Karrablast #8Common $0.22 Victini (14) #14Holo Rare $12.72 Duosion #51Uncommon $0.54 Jellicent #31Rare $5.22 Plasma Freeze Booster Box Plasma Freeze Booster Pack $299.32 Plasma Freeze Sleeved Booster Pack Art Bundle [Set of 4] Plasma Freeze Theme Deck - "Frost Ray" [Glaceon] Plasma Freeze Theme Deck - "Psy Crusher" [Leafeon] Noble Victories Booster Pack $169.15 Noble Victories Booster Box Noble Victories Theme Deck - "Fast Daze" [Accelgor] $34.00

Read More: Modern Horizons 2 Will Feature The Return of An Ancient Planeswalker 9 Boompile Boompile is a pretty simple card

It just isn't a great fit

Blue craves knowledge, and structure is key to research