Lava-Field Overlord Like most of the assist cards, Lava-Field Overlord is fine: it shouldn't be hard to convince someone to assist you in picking off a mutual threat so you're basically casting a beefier Flametongue Kavu
You never see more of another player than a username and rank, and can only communicate via a few pre-programmed, non-verbal emotes
If you sell to a local game store, don't be afraid to shop around
Can You Proliferate Defense Counters on Battles
Vexing Shusher/Destiny Spinner: this is a good ability but Hexing Squelcher is better and I don't think you need this much redundancy especially since these only protect from a single, impactful granted, type of threat Heartstone: this doesn't reduce Yurlock's ability due to the wording- does it work with something else I'm missing
If an effect allows you to put a card with particular characteristics onto the battlefield without instructing you to play or cast it, you consider only the characteristics of a modal double-faced card's front face to see if that card qualifies