The Invader series of Doctor Who: Battles in Time trading cards was the second expansion series to the original set and followed the success of the previous sets (namely Exterminator and Annihilator).
It was launched in September 2007 with a special card-mounted magazine issue which included four packs of trading cards. Additional packs were also available for purchase separately.
The Invader series consisted of a further 225 cards\ numbered from 376 to 600, featuring graphics from Series Three of the television series. (Each card also carried its particular set numbering in the bottom right corner).
The Invader series consisted of;
- 184 (C) Common Cards
- 25 (R) Rare Cards (Foil printed, one in every pack)
- 10 (SR) Super Rare (Enhanced / embossed foil printed, found in one in every six packs)
- 6 (UR) Ultra Rare (Special feature cards with added effect including; lenticular changing images, glow in the dark and scratch 'n sniff found in one in twenty-four packs)
The much sought after, gold ticket card (of Rose Tyler possessed by the Time Vortex) remained available in every thousand packs and was a thicker, gold foiled and unnumbered card.