No one will have any idea what to do when you declare you're attacking for 14
I brought that into what became widely regarded as one of UOLs most fun, best-run leagues
If you take their only two drop play for one mana, one card and no life cost you have actually gained tempo
This card is extremely flexible, but in powerful formats like Vintage, simply searching for Ancestral Recall or Black Lotus is a great way to pull ahead
She can draw you a bunch of cards consistently, and is ideal in the 99 as a draw engine
Now, every instance of lifegain will let Heliod put a counter on the Oak, which will make a Squirrel token, which will trigger lifegain from your Soul Sister (or halfling innkeep I dont judge you!), and the loop is complete