For both of these promo cards, the non-glossy versions are roughly 10x-100x easier to grade as well because of non-glossy card stock, better centering, and no common edge damage from peeling from the corocoro comic
You can cast the spell for its normal mana cost, or you can cast the spell for its cleave cost, which is always more expensive
Cut-Ribbons is solid, and if either piece were more powerful, the full card would be busted
Instant speed graveyard hate is reasonably brutal to this spell, so maybe Languish is safer for Commander
So be prepared
Spells that when they Resolve Sac a Land for Any Lands There are four of these, one four-cost sorcery that broke Standard with Valakut, and then sacs any number for any lands out tapped