As soon as Decimator Beetles ability resolves, state-based actions are checked, and the game sees that you have both counter types on your Servant, so one +1/+1 counter and one -1/-1 counter are removed at the same time (resulting in Servant dying)
Abilities that trigger whenever you roll a specific result, such as Monoxa's first ability, may also trigger
Moogles (from Final Fantasy 6): Depicting their heroic moment rescuing Tina, with effects mirroring their in-game ability to become powerful reinforcements
By the same token where Damn is now allowed in your mono-blue deck, you cannot add cards like Mystical Teachings or Rona's Vortex
Bob Jordan, senior graphic designer, took the concept and ran with it to create this dynamic oil slick-esque treatment, which I think suits Dakkon perfectly