Combined with that if requires 6 mana do nothing enchantment to try and get benefit from this
Gontis Aether Heart has a consistent source of energy counters from any artifacts we play, and has probably the best outlet for our energy: an extra turn
That is a whole lot of goodness
4 years ago I think you should cut: Brutalizer Exarch, Conduit of Ruin, Frost Titan, Giant Adephage, Myr Battlesphere, Oblivion Sower, Pelakka Wurm, Phyrexian Ingester, Rashmi, Eternities Crafter, Rattleclaw Mystic, Sagu Mauler, Simic Sky Swallower, Sphinx Ambassador, Stalking Vengeance, Tornado Elemental, Plasm Capture, Pandemonium, Sunken Hope, Tezzeret the Seeker, Chromatic Lantern, Darksteel Ingot, Disaster Radius, Explosive Vegetation, Heat Shimmer, Rude Awakening, and Spelltwine
You can pay additional costs, such as kicker costs
2021-06-18 Phasing out doesn't cause any leaves the battlefield abilities to trigger