Buttler helped England chase just 126 with eight wickets and 50 balls to spare in Dubai, leaving them close to the semi-finals after equally emphatic wins over the West Indies and Bangladesh.
Morgan really enjoyed watching Buttler “do bananas,” as he mashed up five fours and five sixes.
“It just felt like hitting the middle of the bat over and over again,” he said. “He’s obviously one of the best players in the world, but when he comes out like today it’s very difficult to stop him.”
Buttler said this week that he’s always working on new plans, and when asked if he’s taking the game to a new level, Morgan has no doubts.
“Yes absolutely,” he said.
“He’s definitely one of our players, and there are a few, who are at the forefront of change in the game. He’s one of the best players in the world, but he’s always trying to improve and improve against all the bowlers he faces.
“He’s not just targeting bowlers who might be suitable for him. It’s all bowlers. You look at the guys who are at the forefront of positive change in the game, who move the game forward, that says a lot about the guy.
Morgan also praised Chris Woakes, whose new bowling put England on the path to victory.
“Woakesy was excellent,” he said. “Over the years, his strengths have been embodied tonight. He is one of the best new white ball cricket ball throwers in the world. He is precise, his pace is high, he is very confident in his overall skills.
“It’s not just about hitting a line and a length, or trying to get the ball moving. In our first game here, he threw an incredibly slower ball to get Evin Lewis out of the way. The growth within his club is enormous, he has been at the top for the last four or five years.