Then just use his attack to make him K.O
The Great Henge is a big EDH staple that provides everything you want in a green deck: cards, life, and +1/+1 counters
And of course, it also has the familiar, commander-friendly virtue of being well set up for Flickering out of the game and back again, to trigger the ability a second time
24 Spells Chrome Mox Mothdust Changeling Changeling Outcast Siren Stormtamer Wingcrafter Fatal Push Vampiric Tutor Inquisition of Kozilek Baleful Strix Looter il-Kor Tetsuko Umezawa, Fugitive Spellskite Kitesail Freebooter Never // Return Mistblade Shinobi Yuriko, the Tiger's Shadow Mist-Syndicate Naga Ninja of the Deep Hours Ingenious Infiltrator Jace, the Mind Sculptor Hostage Taker Whirler Rogue Fallen Shinobi Temporal Trespass 16 Lands I have cut Thief of Sanity, Vendilion Clique, Thassa, God of the Sea, Preordain, Surge Mare, and Collective Brutality
At the beginning of your upkeep, he becomes a 4/5