Ghost Lancer, the Underworld Spearman

If only your opponent controls a monster, you can Special Summon this card (from your hand). Cannot be destroyed by battle, except with monsters Special Summoned from the Extra Deck. If this card attacks a Defense Position monster, inflict piercing battle damage.

From Yu-Gi-Oh! Trading Card Game.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6np42w2rmksb1ighd32jex.