At one mana, you could play Hope Charm, Hundred-Talon Strike, or Seize the Initiative to grant a creature first strike (and often more) at instant speed
Chandra, Flamecaller Chandra, Flamecaller didnt get to be in the spotlight for long, but there was a hot second when Grixis Control with Jace, Vryns Prodigy, Goblin Dark-Dwellers, and Chandra, Flamecaller was a force to be reckoned with
Herald of Slaanesh is now an auto-include in any Demon decks, probably alongside Bloodcrusher too
Vedalken thermage is amazing in any Wizard tribal deck, or if you just want to grab Laboratory Maniac and win the game
Before divulging my comprehensive list, let me quickly address why these are the top options
Thickness of 1 Side (microns): Ultimate Guard Katana Inner (40), Dragon Shield Matte (130) 100 Double Sleeved Card Thickness (mm): Theoretical (64), Practical (70) Water Test: Pass Deck Box Fit (mm storage): Fit: 100 good