Emerald + storm energy fits it almost too perfectly
If theres a Stuffy Doll or Brash Taunter in play, Blasphemous Act gets even nastier
(2021-06-18) Any one-shot effects that are waiting "until [this] leaves the battlefield," such as that of Banisher Priest, won't happen when a permanent phases out
Send 2 Elemental HERO monsters with different Attributes from your hand, field, and/or Deck to the GY: Special Summon 1 Elemental HERO Flame Wingman from your Extra Deck or GY, ignoring its Summoning conditions, but it cannot attack directly and you cannot Summon monsters from your Extra Deck, except Fusion monsters, until your next End Phase
The moxen and Black Lotus are also early examples of mana rocks, although pretty broken ones
Violet ex can be a good box without being a good Miriam-chasing strategy