10 years
Sure, we should look at it more as a turn 4 mana rock, but hey, itll basically be the same as an extra land drop at that point, and thats okay
Players can use it to rid the battlefield of a card they don't want their competition to be using
Tinybones, Trinket Thief (SLD foil $35, 4k as commander, 19k as card) Isshin, Two Heavens as One (FCA foil $55, 25k decks as commander, 69k as card) The Deck of Many Things (Ampersand foil $25, 28k decks) Caged Sun (Surge foil $8, Retro foil $5, 137k decks) Nuka-Cola Vending Machine (Borderless foil $40, Surge foil $80, 89k decks) The big draws here are Tinybones and the Nuka-Cola Machine
Combined with The One Ring's undeniable potential in the Commander format, and this may at least explain, if not justify, the $100 price tag on TCGplayer.com for The One Ring's promo version