Iron hide + Arcankte Reaper (1 + 5) = 6 Mana worth
Iron Hide + Bring it on without cost buff (1 + 5) = 6 Mana worth
Iron hide + 5 damage (1 + 3) = 4 Mana worth
Iron hide + 5/5 minion (1 + 5) = 6 Mana worth

They all have great value but the 5 damage, which isn’t worth the cost