Star Fall // Volzar, the Lightning Rod Price and Printings

Star Fall // Volzar, the Lightning Rod card text

Once per Turn Action -- [1 Resource]: Attack
If you've played a Lightning card this turn, this card's attacks get +1[Power] and Go again.
If you control an aura permanent with Sigil in its name, this costs [1 Resource] less to activate.
Once per Turn Instant -- [1 Resource]: Amp X, where X is the number of Lightning cards you've played this turn. (The next time you would deal arcane damage this turn, instead deal that much plus X.)