Card effect
Whenever one of your heroes with a Sacrifice effect dies, Shouyue's max mana -20 this round.
Skill

Take Aim
Shouyue snipes the farthest enemy (heroes first). The bullet deals 50+700% physical attack as physical damage to the first enemy hit.
Upgrades
10lv
Snipe damage increased to 200+800% physical attack
40lv
After defeating an enemy, the sniper bullet keeps traveling with 30% less damage per kill, up to 60%
100lv
Sniper bullet damage no longer decreases
Awakened card

Shouyue
Whenever one of your heroes with a Sacrifice effect dies, Shouyue's max mana -40 this round.
Heluo
Whenever one of your heroes with a Sacrifice effect dies, Shouyue's max mana -40 this round.
Cards that grant this

Rise
Gain 1 Marco Polo and 1 Shouyue. When fighting together, they gain 3 temporary levels. On a win, they keep up to 20 of the temporary levels gained.
How to obtain
Source: obtained from the shop, auctions and other channels