You're battling to take them out
For maximum value, I like the elf token copy and untap + mass pump, but even if you don't have a great elf in play, the other two options can pull you out from a losing situation
Equip only as a sorcery.) Illustrated by Colin Boyer Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
What starts as a simple land destruction spell quickly becomes a total lockdown, especially in multiplayer games
Better yet, if you have potential buyers in two places, you can leverage them against one another by disclosing you have multiple interested parties
There are also several different grading companies, with PSA and Beckett being some of the most popular