newest one piece booster box TCG [OP-13] Carrying On His Will (Japanese) – Card Piece Packaged with care and quality One Piece OP-13 Carrying On

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

(Equipment, Auras you control, and counters are modifications.)

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Trample A creature with trample can deal excess combat damage to the player or planeswalker it is attacking