tatsugiri card sleeves 186/167 Twilight Masquerade (Ungraded) Display Case – CardAura Order Up Tatsugiri & Dondozo

That even the people in the market for these cards are not quite in the market for them at current prices

Play Polymerization to fuse the two Thunder Dragons in your hand to Fusion Summon Twin-Headed Thunder Dragon in attack mode

I still think if you can get in under $10, and you very much can, it seems safe

Almost every cost reduction ability is hard to balance, and similar stuff happened with delve on banned cards like Treasure Cruise and Dig Through Time

Dialgas VSTAR attack can pop off out of nowhere to steal games - although it takes a lot of Energy Cards, you can sit behind the newly released Diancie to avoid any Bosss Orders while you setup

Or at least make their lives a bit easier