First up we have Secret Lair x Tomb Raider, a Universes Beyond Secret Lair that includes five existing cards with new art and names, and one mechanically unique Lara, Croft Tomb Raider, who can steal legendary lands and artifacts from your own and other people's graveyards
Common features a circle, with one edge around it and a dull, gray color
and the aristocrats themselves, with cards like Pitiless Plunderer and Pawn of Ulamog with abilities that trigger whenever your creatures die, allowing you to benefit from your sacrifices
At instant speed, you can end an opponents turn
If a land was destroyed this way, its controller may search their library for up to two basic land cards, put them onto the battlefield tapped, then shuffle
For Prereleases only, Mirrodin Besieged will come in very special packs