aegislash v pokemon card value 126/185 - Vivid Voltage Holofoil Rx2 / G Aegislash V SWSH04: Vivid Voltage

(It's an artifact with ", Sacrifice this token: Add one mana of any color.") Whenever this creature attacks, you may sacrifice an artifact or discard a card

[...] 602.2b The remainder of the process for activating an ability is identical to the process for casting a spell listed in rules 601.2bi

I am personally stoked to see how Regigigas can power up any of the Regi Pokemon in play, drop-down Thorton, attach either a Twin Energy [Rebel Clash] or Aurora Energy [Sword and Shield], and have a fully powered Amazing Rare Reshiram [Shining Fates] that can OHKO a Flying Pikachu VMAX [Celebrations]

You want to cast a spell that costs zero mana

If some of the targets, but not all, are illegal as the ability resolves, the illegal targets will be unaffected

Paldean Tauros R - Rear Kick 30 RCC - Hearty Tackle 90+ If your opponents Active Pokmon is a Stage 1 Pokmon, this attack does 90 more damage