![Unsettled Mariner [Modern Horizons]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/unsettled-mariner-modern-horizons.webp)
Description
| Set: | Modern Horizons |
| Type: | Creature — Shapeshifter |
| Rarity: | Rare |
| Cost: | {W}{U} |
Changeling (This card is every creature type.)
Whenever you or a permanent you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}.
![Swords to Plowshares [Fourth Edition]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/swords-to-plowshares-fourth-edition.webp)
![Vivid Creek [Modern Masters]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/vivid-creek-modern-masters.webp)
![Flooded Strand [Khans of Tarkir]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/flooded-strand-khans-tarkir.webp)
![Hostility [Lorwyn]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/hostility-lorwyn.webp)
![Oath of Druids [Judge Gift Cards 2001]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/oath-druids-judge-gift-cards-2001.webp)
![Synapse Sliver [Legions]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/synapse-sliver-legions.webp)
![Mana Drain [Judge Gift Cards 2016]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/fa59e472-2830-5384-8db0-b7048a2a1c23_1024x1024.webp)
![Vesuva [From the Vault: Realms]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/vesuva-from-vault-realms.webp)