And doubling energy production each time is just a massive value, even if you arent using it to more easily go infinite
Uso-Hachi can rest one of the opponents 5-cost or less Characters, best used to shut down a block and pave the way for your attacks to target the opponents Leader
While many of these cards were powerful to the point of banning in Standard, Historic has a larger card pool and therefore more ways to interact or respond to powerful cards
(12/7/2018) Because damage remains marked on a creature until it's removed as the turn ends, nonlethal damage dealt to Golgari Grave-Troll may become lethal if you remove +1/+1 counters from it during that turn
Wizards of the Coast has done a good job taking this defining quality of the character and translating it to his Magic: The Gathering card
Obviously, while we glossed over it a moment ago, eight mana isnt an insignificant cost to play