Splinterlands - Chapter 6 with Professor Magnus Flint

In this new chapter of splinterlands I have new rules to look at and this one seems not to be easy so I have read the overview well to choose what cards I have to put in this battle and it is:

Speed not only determines which unit takes their turn first, but it also decreases the accuracy of melee and ranged attacks. Each point difference decreases accuracy by 10%.
For example, a melee attacker with a speed of 2 attacking a target with a speed of 5 has a 5 - 2 = 30% chance to miss. And no matter how powerful, a card that’s defeated or one that misses its target—deals no damage, making speed incredibly important.

In this battle there is 4 cards as reward for first time completion so I hope I could pass the level from first time to get these rewards and in additional to 100 Glints.

I have use Barthalamas as an orc for this battle and also I have used some 2 melee cards and 1 range attack and I have completed this chapter from first time as it was a hard battle but I have managed to pass it after losing 1 card and now I have got first completion rewards as you can see below.