Evo Heartdrive (MST229) - Part the Mistveil Cold Foil

If you have a base head equipped, transform it into this, then equip this.
When this is equipped, the next attack action card you play this turn costs [1 Resource] less to play.
Arcane Barrier 1 (If you would be dealt arcane damage, you may pay {r} to prevent 1 of that damage.)