Frost Lock is a M Elemental Ranger Action - Arrow Attack card from Flesh and Blood (Tales of Aria, ELE).
M
Tales of Aria (ELE)
Card Text
Ice Fusion
Cards and activated abilities cost opposing heroes an additional {r} this turn.
If Frost Lock was fused, it gains +1{p} and "If this hits a hero, until the end of their next turn they can't pitch or play cards with base cost 0."