Now I will share my favourite strategy, which is playing with the best speed I could get.
There is several way to get maximum speed different with your opponent.
#1.Get summoner with speed buff or slow debuff to enemies;
#2.Get monster with Swiftness effect to give all team mates 1 speed improvement;
#3.Get slow debuff monsters to reduce enemies speed by 1 point; and
#4.Get Impede ability. It's a new ability that is introduced by the latest edition monsters. It give effect that the monster being hit got it's speed reduce by 1 point, and are stackable until it left with just 1 speed !

Battle Example

You can watch the reply on the link below, but I will give a review about it as well.
https://next.splinterlands.com/battle/sl_75b79cede28030c4d4a4b739e1bade55

Here is the formation of both team. With scattershot, reflect magic, and cripple ruleset, and only water splinter are unavailable.

I chose the dragon summoner because it's not only reduce enemies range attack, but also reduce their speed with 1 points. A perfect summoner for the battle which magic are unlikely to appears.

I have 3 monster with swiftness ability, and 1 monster with the slow debuff plus impede ability.
I also have a monster with protect ability which is usefull to block any physical damage, and 2 monster with backfire ability. This ability are the perfect match with the speed strategy because it can hurt back enemies that got missed attack. Plus there is fly ability for my tank to increase the chance to evade enemies attack.

Here is the speed different after all buff and debuff are applied. My tank is having 8 speed, with 2 monsters are having 9 speed, 1 monster with 7 speed, and 2 monster on the back with 6 speed. It is important that all monster having high speed because there is scattershot ruleset, so the attack will be spreaded on all team instead of focussing on only tanker. On the other side, My enemies having most monster with just 3 speed. 2 of his monster are on 4 speed which is the highest on his side, and 1 monster with just 2 speed. This give my team lead to attack, and chance to evade some attack from my enemies.

At the end of 1st round, both team are still complete, but you can see my enemies hurt a lot while my team relatively safe with all backline having full armor. Thanks for some missed attack plus some backfire to hurt back my enemies

At the end of 2nd round, my enemies already lost 2 monsters, and having monsters with low health on the battlefield. On the other side, my team still complete because able to eliminate enemies before they can attack, and could evade all attack from my enemies.

Finally, it's a win for my team. It's a perfect win cause my team still complete, If I go for survival mode, this means a lot because every monsters eliminated are unable to be used for period of time ! This gave me idea of how speed can be very important on survival mode that will implemented soon !

Conclussion

Speed are playing important aspect on the game. Not just having the monster earlier turn to attack, speed different also having higher chance to evade attack. You can get optimum speed different by having summoner and monster with speed buff and slow debuff, plus having the impede monsters. You can also support the speed different with ability that give another chance to evade attack such as flying or evade, and the backfire ability to hurt back enemies that got their attack missed.

Speed can be very valuable on the survival mode that will implemented soon, because people will try to get their monster survive in order to use them on the other battlefield !

Final Words