Skills (mahjong hands)

Skills are named after mahjong hands, and the rank of the hand tracks the rarity: common and uncommon use standalone 2-han hands, rare uses 3-han to mangan, epic uses yakuman, and legendary uses double and compound yakuman. The skill name tells you the tier (rare and above). Common and uncommon share the same 2-han hands, so those two cannot be told apart by name.

The effect comes from what the hand means. Dragon-tile, heavenly and concealed-triplet hands deal damage; Nine Gates and Seven Pairs heal; terminal hands raise guard; wind hands and All Terminals and Honours slow the gauge; flush and run hands raise attack; Thirteen Orphans and the double-run hands reshape the board.

The size and duration come from the rarity, so the same hand gets stronger as the rarity climbs.

2 han (common, uncommon)

3 han to mangan (rare)

Yakuman (epic)

Double and compound yakuman (legendary)