Hit them fast and hit them hard (with ferocity) to win a battle in the Ferocity ruleset.

RULESET: Ferocity
Description:
All units have the Fury ability.
Think carefully before including a unit with Taunt in your lineup as they will take double damage from units with Fury.
In addition to Ferocity ruleset we have Stampede and Explosive Weaponry rulesets in effect. This is a high mana battle at fifty three mana and Dragon, Fire, Water and Earth splinters active:

The Strategy
The strategy for this triple ruleset of Ferocity, Stampede and Explosive Weaponry is somewhat complimentary, particularly for Ferocity and Explosive Weaponry. This is a high mana ruleset at fifty three mana so I chose a trample tank Diemonshark and high speed high damage melee monsters boosted by speed buffs from Kelya and Supply runner. Additionally Baakjira applies a slow to the entire enemy team. In explosive weaponry and ferocity rulesets it is important to have high damage opportunity monsters and Deeplurker with Kulu Mastermind are perfect examples of that kind of monster.
Additionally shield provided by Kelya and shield on Kulu Mastermind should help. Baakjira adds extra health point to the entire team which is also important and finally Blind ability from Flying Squid should help with misses from our opponent.
To sum up my strategy is hit them fast and hit them hard in their weakest spots spreading blast damage as much as possible.
The Summoner

Kelya Frendul is one of the best summoners in the game. I remember when it first came out and it wasn't meta yet it was the cheapest rare summoner for a little while. Now it is one of the most expensive Chaos rare summoners. Kelya increases speed and provides shield to all friendly monsters. For only four mana it is one of the most versatile summoners in the game.
1st Slot - Tank

Diemonshark is a great tank, however it is vulnerable to magic damage. It comes with a base speed of four, three melee damage, six shield and ten health with trample and enrage abilities all for the mana of eight.
2nd Slot - Reach Monster

Flying Squid is a common monster that comes with a base speed of five, three melee damage, nine health and reach and blind abilities. This is a great monster to put in a second position.
3rd Slot - Secondary Tank Monster

Baakjira is a great secondary tank that is very strong against magic attackers. In case they get through the Diemonshark this monster is supposed to outlast the enemy. It has no attack but comes with two speed and thirteen health with void, slow strengthen and heal abilities all for the mana of six.
4th Slot - Opportunity Monster

Deeplurker is a common Chaos Legion set card that is a great opportunity attack monster. It comes with a base speed of four, five melee attack, six health and opportunity and poison abilities all for the mana of six. This is a great monster to have in your lineup to play double opportunity attack in water.
5th Slot - Second Opportunity Monster

Kulu Mastermind is a soulbound legendary monster. I don't have it maxed out even for the gold league so I am playing it at a level two. Even at level two this is a great opportunity monster that comes with a base speed of four, four melee attack damage, nine health, weapons training, opportunity and shield abilities. It does come at a hefty cost of nine.
6th Slot - Speed Attacker

Supply Runner is a common Chaos Legion set neutral monster. It is particularly useful in this triple ruleset with blast because it further buffs the whole team with one more speed.
THE BATTLE
Our opponent came with a very strong team headed by the fearsome Riftwatcher Taunt tank Agor Longtail. Let's see how it goes, one downside to the taunt monsters in the Ferocity ruleset is that they take double damage from all attackers.
As you can see that even despite a couple misses from my team Agor was taken out in the first round! Unfortunately we lost our speed boosting monster:
In round two we were able to take out their reach monster that was their protection from blast and our Deeplurker was able to land a hit with a poison on their tank healer with poison taking it out at the start of round three:
At the start of round three we unfortunately had a miss from Diemonshark on their Chaos Dragon. Even with the speed of six it missed a two speed dragon, but it does have flying and blind... We did take care of their triage monster the Scale Doctor which is very important as we gain back one armor we lost due to Scale Doctor's rust ability.
And just like that in round four we win despite another miss from our Diemonshark:
Blue team for the win!