Similar to Saheeli Rai / Felidar Guardian back in Kaladesh days, the mere threat of the combo warps gameplay around it
This is a deceptively useful keyword, and it being more resilient than the typical creature version makes it effective
Pay two to sacrifice Yavimaya Elder
Archon of Absolution 3W Creature Archon 3/2 Flying Protection from white (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything white.) Creatures can't attack you or a planeswalker you control unless their controller pays 1 for each of those creatures
And lets also hope that Wizards can keep up the quality that weve gotten in precons with these last two sets
So, all things said and done, you're only looking to play about 23 nonland cards from the cards you open