Because Jetmir, Nexus of Revels simply has to be on the battlefield to get these buffs, you can keep it in the command zone until youre ready to do some serious damage
#4 Dark Ritual (JP Alternate Art) (Foil Etched) Set: Strixhaven: Mystical Archive Printing: Foil Increase: +$19.28 Current Market Price: $67.90 The new Secrets of Strixhaven set, and specifically the new wave of Mystical Archive reprints , seems to have led to a spike of this one too
On top of removing an opposing threat, youre likely to draw a card and deal some damage, and maybe more
Notice that the second part, while limited to your first attack, is not limited per player that's to say, if you manage to hit all three of your opponents during your first attack, you get three extra attacks
These are your best bets for creatures to sacrifice, since they can very easily return to play