User blog comment:Miskos3/Fairy Tail Episode 160: Bad Omen, Review/@comment-3407832-20121208153034

"The battle starts with Jellal rushing forward with Mystogan's staves. I wonder if Mystogan kept copies of his staff hidden in guild's building. Otherwise, I have no clue how Jellal got these ones."

I don't know, Jellal already has Heavenly Magic, Dark magic, Fire magic, Abyss Break (which requires 4 elements), Bind Snake, Thought Protection,... and pretty much an all-in mage so at this point most people just really don't really surprise anymore if he learns them by himself or just pulls a brand new magic out of nowhere. Hell he even casts Water Mirror without any staves at all.

The Sema part is mostly Mashima's tease to hint Jellal's true power and will show it later in the arc, casting it would reveal his identity is obviously a plot device here.