Arcades Sabboth is a rare Legendary Creature — Elder Dragon card from Chronicles (CHR), collector number 71. Current market price: $0.54, TCGplayer market prices via Scryfall.
Flying At the beginning of your upkeep, sacrifice Arcades Sabboth unless you pay {G}{W}{U}. Each untapped creature you control gets +0/+2 as long as it's not attacking. {W}: Arcades Sabboth gets +0/+1 until end of turn.