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Klauth, Unrivaled Ancient

Legendary Creature — Dragon

Flying, haste
Whenever Klauth attacks, add X mana in any combination of colors, where X is the total power of attacking creatures. Spend this mana only to cast spells. Until end of turn, you don't lose this mana as steps and phases end.

CMC
7
Mana cost
{5}{R}{G}
Color identity
GR
Rarity
mythic
Set
Secret Lair Drop
Price
$20.43
EDHREC rank
#2208
Buy on TCGplayer
Klauth, Unrivaled Ancient card art
Klauth, Unrivaled Ancient generates a Mana Confluence's worth of any combination on every attack — in a deck with three or four other attackers, that's enough to cast your entire hand in one turn. The seven-mana price tag is steep, but commanders like Vrondiss, Rage of Ancients and Charnelhoard Wurm turn that burst mana into immediate board presence before opponents can untap.

Best Commanders

Commanders with the highest synergy

01
Vrondiss, Rage of Ancients

Vrondiss, Rage of Ancients

51.9% of decks · synergy 0.48

Vrondiss, Rage of Ancients triggers off damage dealt to it, and Klauth, Unrivaled Ancient swinging alongside a token army produces enough mana to chain those triggers into a full board state the same turn.

02
Wulfgar of Icewind Dale

Wulfgar of Icewind Dale

48.8% of decks · synergy 0.45

Wulfgar of Icewind Dale doubles attack triggers, which means Klauth, Unrivaled Ancient's mana production doubles as well — a combat step with three attackers suddenly produces an obscene float that fuels whatever finisher is sitting in hand.

03
The Ur-Dragon

The Ur-Dragon

40.1% of decks · synergy 0.36

The Ur-Dragon wants to slam expensive dragons every turn, and Klauth, Unrivaled Ancient attacking with even two other dragons generates enough mana to cast a second large threat from hand that same combat.

04
Miirym, Sentinel Wyrm

Miirym, Sentinel Wyrm

39.4% of decks · synergy 0.33

Miirym, Sentinel Wyrm creates token copies of each dragon that enters, so Klauth, Unrivaled Ancient's trigger counts both the original and the copy — the mana pool fills fast in a deck that already wants a wide board of dragons.

05
Ganax, Astral HunterAcolyte of Bahamut

Ganax, Astral Hunter // Acolyte of Bahamut

34.2% of decks · synergy 0.30

Ganax, Astral Hunter // Acolyte of Bahamut creates Treasure tokens whenever dragons enter or attack, layering additional mana on top of what Klauth, Unrivaled Ancient already generates and accelerating the deck's ability to reload mid-combat.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern not legal
pioneer not legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Commander is where Klauth, Unrivaled Ancient belongs — multiattacker boards are common, the mana spike is game-warping, and seven mana is survivable in a 40-life format where games go long. Legacy and Vintage can technically run it, but a seven-mana creature with no immediate protection is a nonstarter against interaction-dense environments where you'll never untap with it. Oathbreaker is legal but similarly hostile; the format's lower life totals and faster pace mean Klauth rarely survives to generate value.

Key Combos

Combo lines featuring this card

Budget Alternatives

Cheaper options that do most of the same work

Savage Ventmaw fills a similar role at a fraction of the cost, producing six mana on attack and enabling the same mid-combat spellcasting lines — it just doesn't scale with your board the way Klauth, Unrivaled Ancient does. Neheb, the Eternal is another strong substitute in red-heavy decks, converting postcombat damage into a comparable mana burst, though it requires you to be dealing damage rather than simply attacking with multiple creatures.

Price Context

Current price

$20.43 premium tier

At $20.43, Klauth, Unrivaled Ancient sits firmly in the premium tier — you're paying for one of the most explosive mana-generation creatures legal in Commander. The price is justified if your deck is built around wide attack steps; it's a hard sell if Klauth is just a standalone threat with no synergy to exploit the burst.

Explore

Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.