Keep sealed if you want the Japanese future-side box identity.
Ping a load of damage, swing in, and get lots of triggers, all in a single turn your opponent couldn't anticipate
You can even just use something like a Cliffhaven Kitesail, Cobbled Wings, or similar and it becomes a 4/3 flier
A little bit of versatility as you can potentially cast the omen multiple times over a game, just dont expect to get it again right away
Invasion of Shandalar / Leyline Surge Invasion of Shandalars effect is a decent enough recursion spell, but if you manage to transform it (and keep Leyline Surge from being destroyed) you can cheat any one permanent in your hand onto the battlefield per turn, which can be absurdly good
That lets players essentially skip their own turns and make an army of Wolf tokens while doing so