As maokai, Once Maokai gets his Ultimate R maxed out, the enemy won't have a perfect time in the game. Maokai's team will quickly capitalize on his CC, though.

His tankiness is really high during the late game. His Passive won't let him die while he dives the enemy backline and deals damage of his own to them.

He is decent during late-game fights as his W, and Q can easily CC a high priority target and prevent them from joining fights. This gives time to his allies to damage the other enemies or collapse on the CC'd target. As maokai, Once Maokai gets his ultimate R maxid, the enemy will not have a perfect time in the game. Maokai's team will quickly capitalize on his CC, however. His tankness is really high during the end of the game. His passive will not let him die while he plunges the enemy backline and inflicts damage on him. He is decent during late fighting like his W, and Q can easily CC a high priority target and prevent them from joining the fights. This gives his allies time to damage the other enemies or collapse on target CC'd.