Earthbind
{R}
Enchantment -- Aura
Enchant creature
When ~this~ enters, if enchanted creature has flying, ~this~ deals 2 damage to that creature and ~this~ gains "Enchanted creature loses flying."
Mammoth Harness
{3}{G}
Enchantment -- Aura
Enchant creature
Enchanted creature loses flying.
Whenever enchanted creature blocks or becomes blocked by a creature, the other creature gains first strike until end of turn.