Tormod, the Desecrator Tormod, the Desecrator can be a handy partner when you have a plan for getting cards out of the graveyard
This little Kithkin doesn't stay little for long and is at its best in long games
While Ruby Medallion is better all-around (but $14 more expensive), any kind of cost reducer works great with Dragons Approach, especially if you have a way to turn that damage into card advantage with something like Virtue of Courage or Syr Carah, the Bold
Some players say that foils are slightly thicker, but the difference is so small that its hard to measure
On top of that, if you're a TCGplayer subscriber, you get opportunities to get more cards for less money, regardless of the tenure you have in the game
Lean into cheap instants and cantrips so Niv-Mizzet triggers repeatedly in a single turn