It is not the best Exclude nor is it the best (cycled) Renewed Faith but it is certainly a lot lot better for having these modes
Killing the summons before they sacrifice themselves sounds like a waste of a removal spell, but when that removal comes as a free bonus on a creature, it doesnt feel quite so bad
The addition of vigilance makes it that much stronger, but can block an additional creature each combat is such a unique effect, and in the format where most people claim to slot cards for redundancy, or still wrongfully cling to the 8x8 theory , youd expect High Ground to show up more
And then all you need is a single mana for each to turn them into some heavy-hitting creatures
In all other zones rules refer to the creature cards
Im taking a more holistic approach, considering a legends raw power, its impact on the format, its enduring popularity, and the uniqueness of its design