As originally conceived, artifacts represented physical objects with magical properties
Defenders are balanced around the fact that they wont be attacking, and turning these creatures into attackers with power equal to their usually high toughness is insane
Paradox Engine (Aether Revolt) Congrats, youve won A lot of the most obscene, and often exploitable, cards in Magic: The Gathering allow you to untap your permanents more often than you should
This can easily accumulate Storm before you connect with your Commander, or you can use this card as your Storm payoff to generate a ton of mana and card advantage
Additionally, you can simply assign all the tramplers damage to the blocking creature even if it is over lethal damage
For those building new strategies, it is often useful to look for synergy pieces that complement your existing cards