Pokmon TCG's Twilight Masquerade expansion brings Scarlet & Violet DLC to the card game Ogerpons four masks each get their own ex card, alongside Okidogi, Munkidori and Fezandipiti
As such, combat can truly become a nightmare for foes to deal with when youre swinging away with Wizards of Thay
Mana Drain does benefit from complementary deck design which is basically useful ways to expend an influx of colourless mana but beyond this it is very good in any kind of deck
Combined with land recursion, it's a really frightful way to create tons and tons of Zombie creature tokens
Using two mana to get to untap and have access to all your mana (and your best seven cards, which you do have to discard to hand size) is often enough to send you over the edge
Otherwise, snagging 1-3 lands is the norm, and you get to put one into play to boot