Most importantly, Invasion of Gobakhan only has three defense counters, making it the easiest battle to defeat, which means flipping it shouldn't be much of an issue for the decks that want it
It's usually one mana, but the effect scales with Sentinel's power
Failure to obtain a license or permit will not justify the cancellation of the sale or any delay in making full payment of the Purchase Price for the lot
After getting a fifth copy of a card, instead of the card itself, you'll get Credits, which will help you to craft more unique cards
It's strong everywhere, but it has enhanced value in archetypes that care about counters generally, +1/+1 counters specifically, proliferate tricks for multicolor brews looking to add loyalty counters for their planeswalkers, four and five-color decks, Commanders with evasion, Commanders with a power that, when increased by 1 get a faster kill, Equipment, Aura, and Voltron decks looking to get in kills with their Commander, and loads more
The snow duals in this set are also fetchable, and the set continues the Pathways from Zendikar Rising