An event reward box that contains only Evolution Shards, revealed as a slot-style spin. Star level determines how many shards drop.
Cards and Gold, scaled by Arena — exact totals were never published.
Live 2026 box. Not a card chest — awards Evolution Shards (e.g. 1 / 2 / 6 per tier). Odds example (official Mar 2026 post): ~49.3% 3-Star, ~45.6% 4-Star, ~5.1% 5-Star.
It holds nothing but Evolution Shards, and the star tier decides the count — single shards at 3-Star scaling up to six at 5-Star. Official tier odds: about 49% roll 3-Star, 46% roll 4-Star, 5% hit 5-Star.
If you're chasing a specific evolution, yes. Shards are the bottleneck resource for evolutions, and event Evolution Boxes are their steadiest source outside Pass Royale.
