First thanks @stever82.

For my entry.

Based on what I have learned so far. Reverse Speed is one awesome part for me as it gives chance to those monsters who have lesser speed. And it is kind of a tricky also as some players don't read so much on the battle modifier, taking a big chance to those who pay attention always on battle rules.

I usually play Fire Splinter and using Living Lava with Speed of 1 is my best priority to take the frontline as he has good melee damage while his low speed keeps his chance to attack first because of the modifier. Or I can use Sea Monster when playing as Water Splinter where he can take down or deals enough damage to the enemy frontline and plus he has healing abilities, keeping him stand strong in frontline defending my range and low health monsters at the back.

For Melee Mayhem, I usually choose Earth Splinter for this as currently, I have good heavy dealing melee monsters on my card list while good health also. But make sure that those at the back are melee that can attack either with Sneak Ability or Opportunity making them not stagnant in every round. Every moment is an advantage and keeping your monsters in dull moments, giving you more chance of losing so let's take note of that always.

For Odd Ones Out battle rules, I usually take note of the mana limit and make sure that I always used all my mana limit. If in case, I need to use a monster of 4 mana cost (Dragon Summoner) then I make prioritized this, especially it gives you chance to unlocked more units. Making your strategy more efficient and effective in battle.