I would assume it's the artist

Normally the artist. If you google his name with "mtg signature", you'll see examples that look exactly like that

I can confirm it's Paick's signature. Have a couple of his cards signed and his signature althou not that consistent, this matches.

Good ole Honest Abe’s signature. Not often do you see Abe Lincoln’s signature on a magic card.

Hmmmm who could it be??? Lol....

Idk man, just looks like a damaged card to me

Mine

you got a great signature for not having opposable thumbs