Nothing this time is exactly unprecedented, however
If you put a fifth counter on it some other way, it won't be immediately sacrificed
This can lock down a couple of creatures for a big swing, and is pretty good if you can flicker it, as the tapping affects ETB
Mother of Runes is great for creature-based strategies and stopping your Angels from being removed
Not only is Yuna excellent for ramping up your board state with more powerful creatures, but Yuna ensures that any buffed creatures don't go to waste, repeatedly recycling counters to summon an overwhelming stream of powerful beasts
Even if all you do is counter a 1-mana spell, you spent an extra mana for a better version of Summoner's Bane (better because it counters all spells and not just creature spells)