This comes up on a small scale all the time, especially when trying to trade Standard stuff into Modern or Legacy staples, but power takes it to the extreme
Playing blue would be perfect for spirit lords, but this cleric is stuck in Orzhov colors
A 1/5 with Reach is probably just going to enable a block you didnt have before, which isnt a great thing to give up a card for most of the time, and making something into a 3/3 with Trample wont always matter either
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Trample, haste Illustrated by: Yoshiya
Vish Kal, Blood Arbiter is one of my oldest decks built after Commander 2011