Ive enjoyed Coastline Marauders in Isshin quite a bit, and Ive also enjoyed hasty beats in Chainer too
Grist, the Hunger Tide is a three-mana Black and Green planeswalker that can do a bit of self-mill and make Insect tokens, sacrifice creatures to destroy creatures or planeswalkers, or drain the life from your enemies based on the number of creatures in your graveyard
But his real utility is that he gives other Villains +2/+2
This deck fits into a lot of strategies, but the most frequent option is white-green token decks
The deck has two main goals: draw a huge number of cards, and counter all of your opponent's major threats, leaving them completely helpless
One dream scenario is that at least one other player has Plant tokens that go with our Avenger of Zendikar