wotc
If an effect (such as the one from Lodestone Golem) imposes an additional generic mana cost to casting Khalni Hydra, the Hydra's ability will reduce it too. It'll reduce the amount of green mana you need to spend first, though.
MTG · Card
◇ Catalog #192
Khalni Hydra
roe·#192·mythic·nonfoil
Illus. Todd Lockwood
—
in vault
—
for trade
—
wishlisted
Apr '10
16 yr ago
Value
$12.39$0 (-0.3%)
30 days high $12 · low $12
Volatility · stable
EUR€7.32USD$12.39TIX0.02 tix
Where to buy / sell
Search links · prices vary by venue
Buy this card
Played in EDH
EDHrec rank #13,741 · Fringe play
Variants
Gameplay
Creature — Hydra
This spell costs {G} less to cast for each green creature you control.
Trample
Legalities
tlrnot legal
duellegal
brawlnot legal
pennylegal
PreDH
Rulings · 3
wotc
For the purpose of determining the cost reduction, the number of green creatures you control is checked as you cast Khalni Hydra, before your last chance to activate mana abilities to pay for it. For example, if you control Wild Cantor (a red and green creature with the ability "Sacrifice Wild Cantor: Add one mana of any color.") as you cast Khalni Hydra, first the cost to cast Khalni Hydra is reduced by {G}, then you could sacrifice Wild Cantor for mana to help pay for it.
wotc
Khalni Hydra's cost reduction effect doesn't change its mana cost or mana value.
Context
Last observed at $12.39, down from $12.43 thirty days ago. Over the trailing 90 days the price moved between $0.02 and $12.46 across 34 observations. Headline volatility reads stable. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
Last observed on Scryfall 17 hours ago at $12.39.
This printing is one of 3 catalogued treatments from ROE — the lineup includes Foil and Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
This card belongs to *Rise of the Eldrazi* (released April 2010).
Card #192 in Rise of the Eldrazi.
Rarity tier: mythic. Mythic rares historically land in roughly one out of every eight boosters at standard print densities.
Card type: Creature — Hydra. Color identity: green. Mana cost: {G}{G}{G}{G}{G}{G}{G}{G} (8 converted). Keyword abilities: Trample.
Legal in Modern, Legacy, Vintage, and Commander.
EDHrec ranks this card #13,741 in Commander, putting it in the fringe-play tier of the format's playable pool.
Illustrated by Todd Lockwood. Rarix tracks 404 other cards credited to this artist across the catalog — browse the full gallery to see the body of work.
Search across TCGplayer, eBay sold, Cardmarket EU, and Star City from the marketplace deeplinks above to compare live listings.
Notes
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Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Todd Lockwood
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.