first edition unopened pokemon cards Episode 365 of Should I Open it? Or Should I Keep it Sealed? 1st Edition - Old Pokemon

When any land enters the battlefield under your control, Nissa generates a mana of a color of your choice

Much better in the slower builds than the aggressive ones obviously

If the reasons you are wanting to play Thoughtsieze are entirely covered by another discard spell that doesn't administer pain then consider that instead

You cannot normally cast things in your color identity, but with this, you can cast your foe's card draw, like Mulldrifter with evoke or Esper Sentinel

These changes go all the way back to the very first set, Alpha , and Jayemdae Tome

But the main reason for building so many decks is a simple one