Fortunately Archangel of Thune is much closer to Timely Reinforcements than it is to Angels Mercy, which means it falls squarely in the camp of Good Life-Gaining Cards (TM), since its life gain-related effects advance your board in a pretty ferocious way
Persistent Petitioners Play one Persistent Petitioners , and you've got a cheap, small creature to help keep you alive and mill a few of your opponent's cards while you get the mill factory started
On the older cards we go by margins around the borders, Rudy told me
When you can play it the Cloud brings awesome power offering a pretty good representation of a Mind Twist, an Armageddon, a Wrath of God or a Fireball, often a couple of those things and almost always far worse for your opponent than you
For that reason, this card also has a decent amount of Commander potential
Theres nothing broken about this: #NotAllCascadeCards