Омнат, Очаг Маны (Omnath, Locus of Mana) (ru)
Legendary Creature - Elemental
| Power/Toughness:
1 / 1
(CMC 3)
You don't lose unspent green mana as steps and phases end.
Omnath, Locus of Mana gets +1/+1 for each unspent green mana you have.