A teaser trailer on YouTube also showed off some of the new cards, but you can find additional details in the website listing
The Angel only costs five mana but Engine is colourless only and can be made with things like Grand Architect more quickly
P/T Number 254 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Pioneer, Standard Rulings (8/15/2010) A permanent card is an artifact, creature, enchantment, land, or planeswalker card
The more ways we can gain life, the more we can load up cards like Hangarback Walker and Walking Ballista to try and win the game
Stronger creatures and creatures with keywords dont need to Exploit often in order to be impactful, while under-statted creatures basically always need to Exploit (and are more likely to sacrifice themselves to their own Exploit ability)
You can psych your opponents out with Evercoat Ursine too, exiling cards that aren't very good to bait out a removal spell