Hydra's Growth
Enchantment — Aura
Enchant creature
When this Aura enters, put a +1/+1 counter on enchanted creature.
At the beginning of your upkeep, double the number of +1/+1 counters on enchanted creature.
- CMC
- 3
- Mana cost
- Color identity
- G
- Rarity
- uncommon
- Set
- The List
- Price
- $1.19
- EDHREC rank
- #2007
Hydra's Growth puts a +1/+1 counter on a creature at upkeep, then doubles all counters on it — on a three-turn clock, that's a creature going from one counter to dozens without any further investment. It costs three mana and needs a resilient threat to stick, but Kosei, Penitent Warlord turns that doubling into lethal commander damage faster than almost any other aura in the format.
Best Commanders
Commanders with the highest synergy

Kosei, Penitent Warlord
Kosei, Penitent Warlord deals damage equal to his power for each kind of keyword he has, and Hydra's Growth snowballs his power so aggressively that a single attack can kill a table — 77% of Kosei decks run it for exactly that reason.

Skullbriar, the Walking Grave
Skullbriar, the Walking Grave retains counters through the graveyard and command zone, so the doubling from Hydra's Growth compounds across multiple game states rather than resetting — every time Skullbriar comes back, it comes back bigger.

Thrun, Breaker of Silence
Thrun, Breaker of Silence is hexproof and can't be countered, which means Hydra's Growth is almost impossible to interact with once it lands — opponents have to find an answer for the enchantment itself or watch Thrun reach one-shot territory within a few turns.

Gargos, Vicious Watcher
Gargos, Vicious Watcher reduces the cost of Hydra spells and fights blockers out of the way, clearing the path for the creature wearing Hydra's Growth to connect unimpeded.

Me, the Immortal
Me, the Immortal creates token copies of creatures, and pairing that with Hydra's Growth on a large base creature means the tokens enter with the same inflated stat line, turning one enchantment into a board-wide threat multiplier.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Hydra's Growth is a Commander card through and through — the doubling effect needs multiple upkeeps to pay off, which is a luxury a 100-card singleton format's longer games provide. In Modern or Legacy, three mana for an aura that does nothing until your next upkeep is simply too slow; removal resolves before you ever see the first doubling trigger. Pioneer has the same problem: the format's interaction density makes sticking an enchantment on a creature for multiple turns unrealistic in competitive shells. Commander is where Hydra's Growth actually functions as designed, particularly on commanders with inherent protection — hexproof, indestructible, or shroud — that let the doubling run unchecked.
Key Combos
Combo lines featuring this card
Price Context
Current price
$1.19 cheap tier
At $1.19, Hydra's Growth sits firmly in budget territory for a card that shows up in over 20,000 Commander decks. That price reflects genuine accessibility — it holds steady because demand is broad but the card sees no meaningful competitive play outside Commander.
Explore
Sources
Mentioned
- Kosei, Penitent Warlord
- Skullbriar, the Walking Grave
- Thrun, Breaker of Silence
- Gargos, Vicious Watcher
- Me, the Immortal
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.