So you got yourself a Conqueror Jacek!, What can he conquer?

Jacek bestows an interesting assortment of abilities on your team. Speed is fantastic in practically every situation. The place where I think that speed shines brightest is in the Explosive Weaponry ruleset.
With Blast you can damage 2 monsters when you hit the tank or the rear, but if you can hit somewhere between these, you'll be able to damage 3 monsters with a single hit. Scattershot can be helpful or not depending on your luck but using Jacek in the Explosive Weaponry ruleset really stacks the deck in your favor. You won't know who your team will hit first, but it's more likely than not to hit 3 monsters.

Check out this battle

https://splinterlands.com?p=battle&id=sl_680777c528a320e9be6ca4cbcd612c7e&ref=jingo-submo

My top recommendation for where to use Jacek: High mana Explosive Weaponry rulesets. Facing off with the likes of the Weak Magic ruleset or any of the summoners that give armor to their team doesn't even matter because of the Piercing ability that Jacek grants.

In the example that I just shared my team dealt 19 damage to my opponent's team before they could respond.