Rubble, Elemental Warrior

{r}: Cannot be blocked by flying creatures.
{r}{r}: When attacking a flying creature, they lose the flying ability.
{2}{r}, Tap: Rubble deals 2 damage to all opposing creatures. For one less mana, he can also deal 1 damage to allied creatures simultaneously.
{3}{r}, Tap: Change P/T to 10/3 until end of next turn. On next turn, Rubble gains Defender