pokemon sword and shield cards rare Grimmsnarl V - 114/189 Fire Fire Hundred Foot Flames For each Fire Energy attached to this Pokémon Top 10 Illustration-Rare Sword &

The most famous example is the easy infinite Zirda has with either Basalt Monolith or Grim Monolith untapping a Monolith isnt a mana ability, it just happens to control how often we can use the attached mana ability

They think it's fake

Another easy way to check is by comparing the corners of the background on the card to the card itself

It may be cast this way again

Again, this poses interesting gameplay from both sides, as the player with the Charm has to think whether holding it to try to steal a one-mana permanent in the future is worth it, while the opposing player has to make decisions to play around it e.g

Her color identity gives the deck access to green, white and blue, alongside an effect that synergizes with Aura and Equipment