That scaling damage gives the card a very high ceiling, especially in decks that can attach more than one Energy per turn
Brokers Confluence Divine Smite Equipoise Ferris Wheel Frenetic Efreet Galadriel's Dismissal Haystack King of the Oathbreakers Oubliette Reality Ripple Renegade Silent Sapphire Charm Shimmering Efreet Slip Out the Back Talon Gates of Madara Teferi, Master of Time Teferi, Timeless Voyager The Moment The Pandorica The Phasing of Zhalfir Unite the Coalition Vision Charm Vodalian Illusionist
And while the win-the-game ability doesnt technically need trample, it has another ability on hit that trample clearly does help with
2 Mind Flayarrrs - Draining Sanity Mind Flayarrrs plays into Magic's cards-equals-intelligence theme by assembling a group of eldritch Horror creatures that cause players to mill cards whenever they deal damage
having a token copy of [casthaven]Mistbind Clique[/casthaven] champion the original can lock down a board quickly
Legendary Creature - Human Berserker Havi, the All-Father Havi has indestructible as long as there are four or more historic cards in your graveyard
