It's a 2-color legendary goblin that cares about artifacts and casting your second spell each turn, which is a lot of different knobs that aren't exactly tied together all that well
If the opponent Kaalia attacked is no longer in the game when its ability resolves, you may put an Angel, Demon, or Dragon creature card onto the battlefield tapped, but it won't be attacking anyone and it won't be an attacking creature
Since being discovered in The Lost Caverns of Ixalan , finality counters are a mechanic that you can expect to see in most MTG sets, so I'm hopeful WotC prints more cards that move, remove, or care about counters, and perhaps even use this new counter tech on more abilities
For example, Drana, Kalastria Bloodchief has an activated ability that costs
Will Play Boosters be more expensive than Set Boosters