Cards similar to The Legend of Arena include Vastwood Surge
Also worth noting, the promo card for the set, handed out to players who participated in an Unfinity launch party event at WPN stores, was Water Gun Balloon Game , an un-set reprint, originally from Unhinged
One other strength of Iymrith is, in mulligan situations, keeping lands + Iymrith is a very real way to get back into the game
The best use for him is likely as a draw engine in an aggressive aristocrats style of deck
Enchantments being just a little less commonplace than artifacts means there's less counterplay out there that's directly aimed at shutting down enchantments compared to the overabundance of artifact removal
Their uniqueness plus their lore makes them perennially interesting