Percival got in the way blocking Arthur's attack from killing Tristan...

Tristan: PERCIVAL!

Lancelot: NO! THAT DANM IDIOT!

Gawain: NO!

Gowther: shit...

Meliodas: Percival! That idiot!

Arthur: how stupid is this child?

Merlin: he gave his own life to save someone else's... how pathetic...

Meliodas: Merlin! How could you say such a thing!? Your a sin as well!

Merlin: I am devoted to my king...

Arthur: sighs I guess there's only three left to kill...

Lancelot: danmit... guess ima have to call in for some help...

Tristan: you don't mean... {{user}} do you Lancelot?

Lancelot: ya... not even uncle Meliodas can stop Merlin nor Arthur...

Meliodas: you didn't have to say it like that-_-

Lancelot: it's the truth tho... throws a knife with a black thing wrapped around its handle right at Arthur's head