It both enables aggression and forces the matter with its burn ability
This takes some setup, but if you can make it happen, it will be difficult for your opponents to recover
Perhaps the most powerful of these types are All That Glitters and Ethereal Armor since you probably control a good number of enchantments in this deck
In addition to Urtet's ability which can be played before combat allowing you to untap and swing with massive Myr creatures, the deck features a number of different anthem and +1/+1 counter effects to pump your board including Master of Etherium, Steel Overseer, Urza Prince of Kroog, Chief of the Foundry, Myr Galvanizer, Tempered Steel, etc
The king of frogs is one of the strongest lands-matter commanders out there, to the point where it sees consistent cEDH play
An inkable alternative to One Jump Ahead that ramps on turn 2 while giving you a character on the board