Court of Ambition [Commander Legends] Planechase 2012 Planes Whenever a Human deals damage

Whenever a Human deals damage to you

Set: From the Vault: Exiled Type: Sorcery Rarity: Mythic Cost: {2}{U} As an additional cost to cast this spell

Set: International Collectors' Edition Type: Enchantment — Aura Rarity: Rare Cost: {1}{G} Enchant creature

that player plays with that card revealed in their hand and can't play it

For example

Court of Ambition [Commander Legends] Planechase 2012 Planes Whenever a Human deals damageSet: Commander Legends Type: Enchantment Rarity: Rare Cost: {2}{B}{B} When Court of Ambition enters the battlefield, you become the monarch. At the beginning of your upkeep, each opponent loses 3 life unless they discard a card. If you're the monarch, instead each opponent loses 6 life unless they discard two cards. Watch your step.