Tandu, The Mystic Grove

{t}: Add {c} to your mana pool. Spend this mana only to cast an enchantment spell, and that spell can't be countered.
{g}, Sacrifice Tandu, The Mystic Grove: Regenerate another target enchantment. It gains hexproof until end of turn.
"When you laughed for hours, but really wept;
When you never tired, but never slept;
When you warred with evils, unafraid;
To Tandu's realm you've surely strayed." - Eamiya, The Voice Enchanted