Uksum is one of my favorite creatures that came out of Forged Unity, and that's saying a lot compared to some of the amazing cards that were in the set.
Even though he has a low scanned energy, he can easily have a higher energy than any of the creatures in your army. If you put him in an Army of nothing but high energy creatures, you can easily get his energy up to 90 or 100, but the fun doesn't end there. One VERY important thing to remember about Uksum is that his scanned energy tops out at 25, which means you can cast Melody of the Meek and make him last 9 attacks guaranteed. And I have more, give him a Kha'rall Husk Armor and you're looking at a 140 energy creature who can't take more than 10 points of damage from any source, mugic or attack. A combo like this can shut down decks that rely on high damage dealing attacks, invisibility strike decks, but sadly not burn decks. Unless you can stop your opponent from dealing even small amounts of damage to him before he sees combat, he isn't going to last that long.
You can use these same combos with his brainwashed side. He's a 65 energy Kha'rall who can't be burned as easily, and you can still give him the 50 energy boost from the Husk Armor and combo Melody of the Meek. You can even give him a shard to give him another element and defender to help our the rest of your team. Even though you can't get his energy as high as you could with hie first ability, you are more more adaptable with his battlegear choices of lower energy creatures.
Rate out of five!