Thunder Shield

The Lighting Shield (a.k.a. Magni-barrier) is a power-up item from Sonic the Hedgehog 3, as well as its locked-on form, Sonic 3 & Knuckles. It is obtained by destroying an item box with a lightning bolt symbol (pictured) or by obtaining a gold-coloured gumball in the Bonus Stage.

The shield absorbes one hit as well as allowing Sonic to preform a double-jump. Like the Fire Shield, Sonic will lose the shield if it touches water but the water will flash for a split second, representing the electricity being dispersed in the water, but strangely the shield is not lost when the player's character skims across the surface of the water in the Hydrocity Zone. Also, like the Bubble Shield and Fire Shield, this shield will deflect shots from badniks that use energy weapons (such as Blastoids) but not lasers. It also has a sort of "Magnet Effect", as it attracts Rings to it.

This shield can also attract rings. This shield has also appeared in games such as Sonic Adventure and Sonic Rush but has turned blue, and has sort of a plasma ball effect, in more recent games the Lightning Shield doesn't give the player a double-jump. A version of this shield appeared in Sonic 06 which was a special gem ability of Sonic's.