back of an mtg card Classic Standard Deck Protector Sleeves (100ct) for Magic: The Gathering so you don’t lose it and can come back anytime after! Discover 10 MTG Card Back

The reason that the card costs so much is that it is pretty much the number one most iconic creature from Magic during that time, with Serra Angel an easy choice for second place

We love Optimus Prime as much as the next nerd, but unless Urza is building him, its an odd decision

Other Somewhat Popular Sideboard Options Kitchen Finks is a main-deck card in some builds but is also used from sideboards to fight aggro by gaining some life and blocking twice

Cleanup Replacement effects have enough depth that we may need to revisit this in the future for some more weirdness (especially if any rules around replacement effects change)

Outside of sacrificing it or destroying the aura, which not every color can meaningfully do, youve now disabled their most threatening creature, potentially for the remainder of the game