Creature — Rat 2/1, 2B (3)
Uncommon
Shadow (This creature can block or be blocked by only creatures with shadow.)
Whenever Stronghold Rats deals combat damage to a player, each player discards a card.
In the stronghold's dungeons, the shadows hide in the vermin.
Illus. Brandon Kitkouski

5/1/2007: First the active player chooses a card to discard, then each other player in turn order chooses, then all cards are discarded simultaneously. Although the chosen cards will be indicated (so a player can't change his or her mind later), they'll remain face down until they're discarded. You won't know what your opponent is going to discard when making your choice.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern