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That's incredibly powerful

If you Connive enough with the legendary creature and discard nonlands to pump its power, then its second ability becomes more powerful by granting Double Strike to stronger and stronger creatures

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

Now, shell force a discard for an opponents effort

Not because the cards were bad, but because people wouldn't play against you in a game if you played them

It provides a powerful card draw engine that can quickly snowball into overwhelming card advantage