It's pretty good there, which explains why it's in nearly 60% of EDHREC user submitted decks with Urtet, Remnant of Memnarch at the helm
The idea is that you can force some tricky blocking situations under the threat to your opponents that you might swap them around
What other Monty Python references would make great Magic The Gathering cards
The Un-sets are a series of comedic Magic sets full of jokes, references, and weird mechanics that could never be done in a normal Magic set
Grand Abolisher is the most mana-efficient option, but Kutzil, Malamet Exemplar and Myrel, Shield of Argive provide creature-centric decks additional benefits for more mana
Oh, and whenever you smash someone, you get to run the whole Red Exile the top card of your library and play it this turn too if it works. So you get pseudo-card drawing, on a 3-mana 3/2 trampler