Valerifawn, Mystical Beast of the Forest (AC18-EN019) - Advent Calendar 2018 1st Edition

You can discard 1 card, then target 1 Level 2 or lower Beast monster in your GY, except "Valerifawn, Mystical Beast of the Forest"; Special Summon it in Attack Position or face-down Defense Position. You can only use this effect of "Valerifawn, Mystical Beast of the Forest" once per turn.