Klauth, Unrivaled Ancient

📖 How to build Klauth, Unrivaled Ancient

Klauth, Unrivaled Ancient is a seven-mana flying, haste Dragon whose main draw is its attack trigger. Whenever it attacks, you add X mana in any combination of colors, where X is the total power of your attacking creatures. That mana can only be spent to cast spells, and it stays available until end of turn even as steps and phases end. The game plan is to attack with a wide board, then spend the burst of mana on a large turn of spells.

Build around creatures that add power to the attack and around spells that can use the mana. Ramp such as Cultivate, Farseek, Nature's Lore, Rampant Growth, Kodama's Reach, and Three Visits helps you reach Klauth's cost, while Birds of Paradise and Llanowar Elves add early bodies. Removal like Beast Within and Chaos Warp, plus the sweeper Blasphemous Act, gives the spell-heavy turn targets. Heroic Intervention can protect key pieces.

The mana can't pay for abilities or other non-spell costs, so plan around that. Klauth does nothing unless it attacks, so it needs a safe route to combat. Since the mana scales with total power, a board of small creatures produces much less than a few large ones. Klauth is also a single legendary creature, so removing it shuts down the engine.

Deck guide written with AI assistance based on the card's rules text.