Trample A creature with trample can deal excess combat damage to the player or planeswalker it is attacking
Dig Through Time #1 has a lot of options listed, although if youre looking to pump up the 2/2 Human Wizard you will probably want to shy away from the cards that give shroud (like Lightning Greaves and Clout of the Dominus) and instead use the cards that provide hexproof (like Swiftfoot Boots and Elgaud Shieldmate)
Knowledge of Bants landscape and ruins is a weapon that the invaders cant comprehend. Elspeth Tirel Illustrated by Michael Komarck Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Whenever they attack, you choose a Creature you control and then roll a d20
The long and short of it is that because the static ability of Ashes of the Fallen changes the creature type to Lhurgoyf before Disa's triggered ability goes off, the combo does indeed work, and it can provide a massive power boost to the Graveyard Overdrive deck
I thought it was just a convenient buff allowing you to abuse them with the likes of Goblin Welder, Tinker or any of the other many effects that want to sac off artifacts