mtg commander prebuilt decks Planeswalker Party Deck Commander Decks | Pre-Built MTG

This doesnt explicitly buff constructs, but it has a work-around that buffs all your artifact creatures

Even though your trampler cant kill the creature itself, it only needs to assign what needs to be lethal damage before assigning the excess to the defending player

Ashe, Princess of Darkness A good limited creature for artifact heavy decks with an aggressive tilt, Ashes size is acceptable, just watch that she trades with any 2 powered creature

I do love the upside-down version of this card from the Secret Lair crossover though, and the card can gather quite a bit of card advantage at tables that are amenable to 8-drops