Although powerful enchantments like Necropotence (then called global enchantments, which I miss, just a bit) could dominate the game in the 90s, auras (then called local enchantments, which nobody misses) were always a mistake
Every 100 card deck in this format must have at least one card that you nominate as its main character: the eponymous commander
Use cost-effective packaging materials
Shaymins move only does 30 damage, but its ability lets all Pokmon on your side of the field cost one less in Retreat Costs
then, it can get set up early while not necessarily needing an optimal hand
That is, if in play testing you find that x number of lands is too few, but x+1 lands is too many, you can effectively play some number between x and x+1 (not exactly x+0.5) lands by playing x+1 lands in a 61 card deck