Some Invizimals have discovered the power of electricity, but neither does it with such precision and skill as Skeletail, the two-tailed Invizimal. The Skeletail can use its two tails like electric weapons: only needs a touch to send a powerful current through the body of your enemy, causing an electrical burn.
Skeletail is a rare rock invizimal that is normaly unobtainable in invizimals. You need to find a trap online that attracts skeletail. first you need to press select, up, right, down then left. Then it says "Capture secret." "You have unlocked the biggest capture secret of all!" You enter the big secret and scan this trap.