Starnheim Unleashed is perfect for the currently developing Angels tribal decks while also being a good inclusion in many control decks
Scourges Edgewalker provided the first white-black tribal support (and spoilers, weve not seen much WB Cleric tribal support since), though we have seen WB tribal again in Khans of Tarkirs warriors and Amonkhets zombies
The new Opus mechanic rewards you for casting spells that cost five or more mana, and Veyran doubles every single spell-cast trigger you control
Your creatures having lifelink only part of the time is still worth Sorins four mana, because youre getting into the Red Zone anyway
But unlike a lot of previous versions of this effect, you, the caster of the spell, are the one to choose what stays and what falls
In that case, it succeeds at exiling it