In most situations, protecting Contain!, and Extinguish is the most important, as the two cards can shut down your opponent's plays.
I bit my nails a bit over the inclusion of Howling Mine and Font of Mythos, wondering if they would slow the deck down too much
Unique Finds: Local shops may offer exclusive items, rare cards, and older sets that are harder to find at larger retail chains
It could work if youve got some kind of Harmonic Prodigy deck with, I dunno, maybe Sek'Kuar, Deathkeeper as commander
Of those that arent from any one plane, some are fully generic and could exist anywhere, but others have a decisive, iconic visual design
Sword of Fire and Ice says, Whenever equipped creature deals combat damage to a player, draw a card and deal 2 damage to any target. This only fires when you successfully hit an opponent with the equipped creature