Bilbo's Ring

As long as it's your turn, equipped creature
has hexproof and can't be blocked.
Whenever equipped creature attacks alone,
you draw a card and you lose 1 life.
Equip Halfling {1} ({1}: Attach to target Halfling
you control. Equip only as a sorcery.)
Equip {4} ({4}: Attach to target creature you control.
Equip only as a sorcery.)