Midnight Scavengers and Graf Rats meld to form Chittering Host.
July 22, 2016 · Eldritch Moon
rule 712.5a not present in this release
February 1, 2014 · Born of the Gods
The controller of another player can use only that player’s resources (cards, mana, and so on) to pay costs for that player.
September 30, 2011 · Innistrad
The controller of another player can use only that player's resources (cards, mana, and so on) to pay costs for that player.
April 23, 2010 · Rise of the Eldrazi
rule 712.5a not present in this release
February 1, 2010 · Worldwake
At the end of a subgame of a Planar Magic game, the face-up plane card is turned face down and put on the bottom of its owner's planar deck. Then each player moves his or her planar deck from the subgame command zone to the main-game command zone and shuffles it.