The counterspell mode is best compared to Syncopate
Then you simply pitch all your excess energy cards into the bin to deal as much damage as is needed, followed by trainer cards that can retrieve them all so you can have another go
In many ways, its the last of its kind and represents the end of an era
Akroma, Angel of Wrath Akroma, Vision of Ixidor Angry Mob Appeal // Authority Baffling End Bant Battlemage Bringer of the White Dawn Concerted Effort Devouring Sugarmaw Elder Land Wurm Firehoof Cavalry Heroic Charge Iron Tusk Elephant Jhovall Rider Kenrith, the Returned King Kenrith, the Returned King Lancers en-Kor Leonardo, the Balance Mirror-Sigil Sergeant Moorish Cavalry Noble Elephant Odric, Lunarch Marshal Prized Elephant Salvation Colossus Thraben Militia Thunderous Orator War Elephant Wayward Angel Zetalpa, Primal Dawn
Activate only as a sorcery.) Only attacking creatures that have flying as Kangee's Lieutenant's second ability resolves will get +1/+1