Grey.

"My, my, Gurpus," Alvexor muttered. "To think that you could change your outlook to something less evil... a pity. I'm not going to try to convert you like Weena. First thing first, though, those summonings may pose a threat. Geh!" Alvexor grunted as he ducked to avoid one of the pale summoning's fist, following up right a mana-infused punch of his own. Poosh!
Alvexor's eye's widened as his fist and forearm impaled the being's chest just under what Alvexor assumed to be it's solar plexus. "What?!" he gasped sharply. The figure slowly turned it's head to face Alvexor ominously as out of the corner of his eye he noticed the other summonings rushing towards him.
"Not good," Alvexor groaned. Acting fast, he blocked another overhead strike, before quickly drawing a single rune on the summoning's chest. The rune glowed and faded into the being's chest and a second later the section of it's flesh around Alvexor's arm began to glow red. He felt it heat up and pulled his hand free before the pain became too intense. Good, Alvexor thought, quickly following up with a high kick to the summoning's face. 
The summoning went soaring and Alvexor leapt into the air after it, barely escaping a lunge from another summoning.
That was the rune for heat, wasn't it? Weena asked, using Alvexor's large jump as an opportunity.
Indeed, Alvexor responded, you do seem to pick these things up at quite an impressive pace.
Alvexor began the descent of his leap towards the stomach-less summoning, feeling the wind rushing coolly against his skin. "You're not surviving this one," he muttered as he began to absorb mana.
Kusssht! Alvexor's mana-infused kick pummeled into the summoning's neck, sending it's instantly-decapitated head rocketing away. No chance of that one getting up again. One down, twelve to go, Alvexor thought. Time to get serious.
Alvexor instantly vanished and all the summonings charging at him stopped in confusion. 
"Hello there!" Alvexor's call from behind caused the summonings to turn around. If they had faces, Alvexor assumed that their expressions would've been portraits of delightful confusion.
"It seems that you can't keep up with me!" Alvexor chuckled. "How about I give you another chance? Now you see me, now you don't..." With that final word, Alvexor vanished again. 
For a second the summonings looked around in confusion. Then two of them spontaneously exploded, pale limbs flying everywhere.
"Aw, you couldn't keep up with my telejump," Alvexor said, appearing in the centre of the group of summonings. "On top of that, it would appear that two of you have been eliminated from the game. Ten contestants re-"
The closest summoning to Alvexor made a wild swing for him, but Alvexor was too fast. He ducked under the summoning's arms, kicking out at it's shin. It stumbled and fell forwards, right on a collision course with Alvexor's fist. Hit by a jumping uppercut, the summoning's head went flying into the distance, while it's body was incinerated by Alvexor's return-flight mana-infused kick. 
"Whoops," Alvexor smiled as he brushed himself off. "Make that nine."
The summonings decided that the best tactic would be to abandon any real tactics and simply charge at Alvexor from then on in. Chuckling at the irony, Alvexor jumped a few metres into the air, out of attack range. As he ascended, he began to draw new runes -- the first seven he used to separate all the super cold soldiers.
"Oh, my!" Alvexor called down to the summonings in a sing-song voice as the combination rune finished forming. He grabbed it as gravity took it's hold, pilling him back towards the summonings. "One of you tried to get me while I was talking, and that is quite the dirty tactic. As a penalty..." Alvexor dived through a gap in the group of summonings eagerly clumped below him, slamming the rune into the ground, shouting like an announcer crushing a contender's hopes in the most entertaining way possible. "-YOU'RE ALL DISQUALIFIIIIEEED!" 
Like all the super cold soldiers did, the rune's power propelled the nine summonings in different directions.
"Now for the grande finale," Alvexor smiled, before disappearing.
For a split second he was alongside one summoning in midair, dealing a triple kick barrage, the next that summoning had broken into lifeless pieces and Alvexor was falcon punching another one. 
In the blink of an eye, each summoning seemed to either explode, fall apart into it's separate limbs as if it were a constructo toy, simply disappear without apparent cause or otherwise.
Now for Gurpus, Alvexor thought. No doubt that he's trying to get me to expend my energy so it'll be much easier for him later on. Unfortunately for him, I'm still playing around too.
In an instant, Alvexor telejumped to only twenty centremetres from Gurpus, his left fist drawn back in a punch aimed at Gurpus' face.
Which just so happened to be fist without any pinkie/little finger. The finger that was floating around somewhere, in the form of millions of mana particles ready to detonate upon Alvexor's command. In Gurpus' bloodstream. 

--- Flashback ---
The blast sent all of the cold soldiers and Gurpus flying in several directions to distances of up to a kilometre away, some more gracefully than others. Alvexor then raised his left arm and dozens of super cold soldiers spontaneously exploded.
This is because when Weena's body was separated into billions of mana particles, many of these particles embedded themselves in various enemies' bloodstreams. Now Alvexor called those particles back and they broke free of the cold soldiers' bodies by means of explosion. Or to be precise, Alvexor called back all particles except the ones he had embedded in Gurpus' body.
The mana particles reformed around Alvexor's left arm and a hand suddenly poked out through his robes. Alvexor looked down at it and noticed that he was still missing his pinkie, his fifth digit. He grunted in apprehension, it was a success...