by Cinnibar
They do resolve in card play order, but only as far as the global 'change all damage' effects in this case.That is, if Ra has changed all the damage to fire, and Megatropolis has changed it all to melee afterwards, then all damage is melee. This includes if Ra plays a one-shot to deal X fire damage, which though 'last' in the play order, does have its damage type changed.