Blissey can make a pretty good defensive wall with the moves you asked. It learns Heal Pulse and Bestow upon Level Up, Toxic and Safeguard via TM, and Helping Hand or Heal Bell as egg moves. Here is what I would use:
Blissey w/ Lum or Sitrus Berry
Ability: Healer
252 Def, 252 Sp.Def, 6 HP
Helping Hand
Heal Pulse
Heal Bell
Bestow
Blissey w/ Sitrus Berry
Ability: Healer
252 Def, 252 Sp.Def, 6 HP
Helping Hand
Heal Pulse
Safeguard
Toxic