https://tappedout.net/mtg-decks/megatron-edh-decepticons-attack/?fmt=

This is an excellent description of how to use the deck.  Go back and read it.

Another paper deck... this is my current favorite one, since it feels like I'm ten years old playing with toy robots.

It's a very simple concept.

Creature police with thrown artifacts creatures (or artifacts, if absolutely necessary).
Try to hit an opponent's creature with excess damage to trigger Megatron, Destructive Force  's conversion to robot form.
From opponent loss of life, cast larger spells/summons in the postcombat main phase from Megatron, Tyrant  's own conversion trigger, which generates mana.
The deck makes use of Megatron's sacrifice mechanic, either working off of it, or dealing with it.

For funsies, I put in all the Decepticons that matched Megatron's colors (very unfortunate that Soundwave can't be included), and they all have some fun mechanics to really cause some chaos in a multiplayer game (like goad and monarch).