gacha

Protea, who has a powerful Mana Core, can preserve her own Saint Graph even without a Master.
For Protea, the Master is not 『a necessary keystone to bound her / a source of mana supply』, but just 『the one who summoned her』.
In the case that a Master succeeded in summoning her in a Holy Grail War, the 『duty to supply the Servant with mana』 would disappear for that Master.
It depends on the Master whether they see it as an advantage or as a predicament.

At the moment, the Servants that have 『Monstrous Strength: EX』 are only Tiamat and Kingprotea.

The enemy’s surroundings become the sea, and a giant something appears swimming beyond the sea.
It appears just like a white whale (Moby Dick), and rises while spilling the white seawater.

Oh,so the one supposed to be summoned by the crossbow was supposed to be QSH but because he showed up in FGO first,Narita changed it so that the sea god that got beaten by QSH was summoned instead.