The Collectable Card Game or Trading Card Game (CCG or TCG) has been dominated by three big games over the last few decades, with Magic: The Gathering, Pokemon and Yu-Gi-Oh taking most of the focus of players and collectors
A turn-one Sol Ring puts you a full turn ahead of the table, and that lead compounds fast
Theres also the single target Rift, a mode used not often enough, in my opinion
He is indestructible, which prevents him from being destroyed by harm or other destroy effects
Sacrificing creatures or artifacts makes it easy to find fodder, hitting any target is a big deal, and dealing two plus the cards mana value means you can just cast something expensive and deal a ton of damage to your opponent immediately
Its an extremely well-loved card, and while not particularly expensive, often hard to find a copy of