Mashle Shield

4★ DEF

Skill

40–46s CT - For 12s, heal all allies' HP by 140–200/s.

Numbers in a range are rolled when the equip is crafted.

Extra effects: 0–2 at random: ATK UP, HP Recovery UP, Skill CT Speed UP, Break Power UP, CRI rate UP, Accuracy UP, Arts UP, BE Output UP, PHY DMG UP, MAG DMG UP, Status ailment RES UP
Passive: 3 of the same Crest Fragment can add that Crest's effect

4★ DEF

Vital

40–46s CT - For 12s, increase allies' ◯ Element RES by 18–25%.

4★ DEF

Energy

40–46s CT - For 12s, increase all allies' PHY RES or MAG RES by 21–30%.

Data from the Grand Crusade Guide by jeffers and .phex (Grand Summoners Official Discord).