Archon of Cruelty seems like one option, and potentially you could be using this with Sneak Attack, dropping out huge creatures then sacrificing them to this to get more creatures
It can destroy any permanent (even lands) at instant speed, and the drawback certainly is something that Green players can handle
Clever Impersonator is excellent any time you have at least an okay board state, but is best used when copying something that will cause a huge amount of ability triggers to go off
Infinite Guideline Station Infinite Guideline Station is a tough one to pull off because outside of hybrid mana cards, multicolored permanents tend to be more expensive and legendary
For a while, Time Walk was sort of a glorified Explore, that also untapped your lands, like a Cloud of Faeries
And in a format where instant removal is at its worst, you have the power to simply end games on the spot with the four mana combo of Blitzball Shot into post-combat Self-Destruct