Janna: Searing draw and Chosen growth

Keep drawing and playing discounted cards, lowering the cost of cards still in the deck while growing your board. Searing Brilliance adds marked spells, Echoing Spirit supplies champion-spell access and Chosen by the Stars turns created-card chains into a larger finisher.

It's her most popular combination in 10★ clears and guide builds. Compared with the rare-relic Chemtech guide, it trades late mana-gem duplication and Deathless for earlier cycling and a champion that can gain Overwhelm. The opening can still be Vulnerable while you establish the discounts.

Echoing Spirit

Add seven champion copies at Game Start and discount champion spells by one. Extra copies become her champion spell while she is in play, providing targeted attack and two draws. Copies already in your deck can receive the star power's deck discounts; a newly created card in hand has not automatically received those earlier reductions.

Searing Brilliance

At Game Start, mark a random spell with Mark of Medarda and add four copies. The cost reduction and draw can sustain your engine, especially on a cheap spell that replaces itself. It is random, so inspect the marked target rather than assuming you received the best one.

Chosen by the Stars

Fated rewards an allied target once per round; Augment rewards created-card plays. At ten attack, Empowered gives Challenger, Overwhelm and Regeneration. The champion spell can support both targeting and draw, but not every spell you play targets the champion. Level 30 and three Epic upgrades equip the trio.

Keep affordable units and useful discounted cards. Forge Chief provides a body and spell-mana access, and Ballistic Bot supplies created-card fuel. Develop enough defense to avoid spending the whole opening cycling while the enemy attacks an empty board.

Play Janna when you can use her Updraft and subsequent draws. Play discounted cards to reduce the top two cards' costs at three stars, then use draw to reach those cards. Her champion spell's targeting can trigger Fated, while its draws help find more cheap plays.

At level two, Howling Gale has Grifter's Deck. If it receives the mark, replenishing copies and drawing cards can make a long spell chain possible. Its Burst-speed bonus upgrade changes when you can use it; without that upgrade, do not plan it as a Burst response. Check your real mana, targets and card supply before declaring an infinite.

Favor useful discounted spells, draw, early bodies and protection. Cutting an unhelpful spell makes a future battle's random mark more predictable, but keep enough removal and defense for the adventure.

Black Shield replacing Chosen protects your board, while Deck of Destiny supplies another created-card plan. The original Chemtech Duplicator setup needs six mana gems before copying spells. It can be useful in longer fights, but it should not dictate an opening that your faster engine cannot survive.

Three-star What's Updraft? II discounts the top two cards after a cost-reduced play, and two-star Eye of the Storm supplies mana and weakest-ally growth. Four-star Higher Education adds temporary team attack per draw. Six-star Winds of Change adds the high-attack champion-and-Bird Updraft finish; the Chosen Overwhelm plan works without that later upgrade.

• Janna relic advice by u/TempMedicine, 2026-08-11, 10 points (observed 14 Oct 2026).
• Janna builds and their opening tradeoffs by u/babinro, 2026-08-14, 26 points (observed 14 Oct 2026).
• Player-voted builds, local snapshot collected 13 Oct 2026.
• Champion guide builds and recorded clears, local snapshot collected 13 Oct 2026.
• Champion mechanics and level rewards, local data checked 14 Oct 2026.