![Kalonian Hydra [Commander 2016]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/kalonian-hydra-commander-2016.webp)
Description
| Set: | Commander 2016 |
| Type: | Creature — Hydra |
| Rarity: | Mythic |
| Cost: | {3}{G}{G} |
Trample
Kalonian Hydra enters the battlefield with four +1/+1 counters on it.
Whenever Kalonian Hydra attacks, double the number of +1/+1 counters on each creature you control.
![Progenitus [From the Vault: Legends]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/progenitus-from-vault-legends.webp)
![Forgotten Creation [Shadows over Innistrad Prerelease Promos]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/forgotten-creation-shadows-over-innistrad-prerelease-promos.webp)
![Mammoth Umbra [Planechase Anthology]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/mammoth-umbra-planechase-anthology.webp)
![Nissa, Vastwood Seer // Nissa, Sage Animist [Magic Origins Prerelease Promos]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/nissa-vastwood-seer-nissa-sage-animist-magic-origins-prerelease-promos.webp)
![Conqueror's Galleon // Conqueror's Foothold (Buy-A-Box) [Ixalan Treasure Chest]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/conqueror-s-galleon-conqueror-s-foothold-buy-box-ixalan-treasure-chest.webp)
![Call of the Wild [Classic Sixth Edition]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/call-wild-classic-sixth-edition.webp)
![The Great Forest (Planes) [Planechase Anthology Planes]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/great-forest-planes-planechase-anthology-planes.webp)
![Vesuva [From the Vault: Realms]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/vesuva-from-vault-realms.webp)