In one-on-one duels, including Cube matches, this is a bad [card]Threaten[/card], and Threaten doesnt make the cut
Keep in mind: the value can vary greatly depending on condition, rarity, and demand
Arvens Skwovet From Heat Wave Arena [C] Gnaw Through: 10 damage
Even though I won't open the 1:1 one ring, I'd personally go with The Lord of The Rings: Tales of Middle-Earth collector boosters if I could find them
Each Play Booster contains 14 Magic: The Gathering cards, including 14 cards of rarity rare or higher, 36 uncommon cards, 69 common cards, and 1 land card
You get an overstatted creature that can draw you cards, that also makes all your other Merfolk less tempting targets thanks to the MTG Ward effect, and becomes indestructible super easily