Shield Bearer is a common Creature — Human Soldier card from Ice Age (ICE), collector number 52. Current market price: $0.19, TCGplayer market prices via Scryfall.
Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)