This happened a few weeks ago. I'm playing a Phenax, God of Deception
deck with Phenax in play and cast Tree of Perdition
. Somehow the tree survives a trip around the table. I pass with the it untapped.
The player to my left is playing Atraxa and has Ajani Steadfast
in play with five counters. He has one other creature that's been forced to attack a Gideon, Battle-forged
this turn, and plays a Deepglow Skate
doubling Ajani's counters.
He ultimates Ajani to gain near-total damage prevention; in response I use the Tree of Perdition
to keep his life at a manageable 13 as well as pump my Tree's toughness to the moon.
The player to the left of my Ajani opponent, however, has a response - he casts Ovinize
on the tree, bringing the Ajani player's life to 1 instead of 13.
The Ovinize guy then takes him out of the game next turn with a single attacker, since the Deepglow Skate came in tapped due to a Thalia, Heretic Cathar
elsewhere on the battelfield.