If theres a lot of Burn in your metagame, I would consider playing a second Spell Pierce over the second Thoughtseize in your sideboard and cutting another Steel Overseer
An Esper flavour commander (White, Blue, Black), G'raha turns your life total into an army
Edge of Eternities flips the scripthere, Izzet is a fast, artifact-heavy aggro deck
You can find the details in the rules
If Tifa attacks one player, and each of your other two creatures attack one of the other players, Tifa's melee buff will become +3/+3, making her into a beefy 7/7
In the case of Archazia's Island, Lorcana is adding a card called Ink Geyser, which is very reminiscent of the problematic "mass land destruction" mechanic in MTG