![Yahenni, Undying Partisan (Promo Pack) [Aether Revolt Promos]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/yahenni-undying-partisan-promo-pack-aether-revolt-promos.webp)
Description
| Set: | Aether Revolt Promos |
| Type: | Legendary Creature — Aetherborn Vampire |
| Rarity: | Rare |
| Cost: | {2}{B} |
Haste
Whenever a creature an opponent controls dies, put a +1/+1 counter on Yahenni, Undying Partisan.
Sacrifice another creature: Yahenni gains indestructible until end of turn.
![Living Artifact [Beta Edition]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/living-artifact-beta-edition.webp)
![Vivid Creek [Modern Masters]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/vivid-creek-modern-masters.webp)
![Silver Knight [Friday Night Magic 2004]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/silver-knight-friday-night-magic-2004.webp)
![Mana Drain [Judge Gift Cards 2016]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/fa59e472-2830-5384-8db0-b7048a2a1c23_1024x1024.webp)
![Progenitus [From the Vault: Legends]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/progenitus-from-vault-legends.webp)
![Natural Order [Judge Gift Cards 2010]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/natural-order-judge-gift-cards-2010.webp)
![Junun Efreet [Arabian Nights]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/junun-efreet-arabian-nights.webp)
![Lashwrithe [New Phyrexia]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/lashwrithe-new-phyrexia.webp)