Two suggestions I have for this slot are Chevill, Bane of Monsters and Tireless Tracker
Samwise the Stouthearted Samwise the Stouthearted takes on the support role fully, returning a permanent that entered the graveyard this turn to your hand, then the ring tempts you
Also when set up appropriately, ie a huge mana advantage, Capsize can lock a player out of the game as Forbid can when you have huge card advantage although both require a fairly static board position to begin with as well as a substantial and ongoing drain on your resourecs
It can only be done at sorcery speed, which is fair, but it's so good in Shilgengar, Sire of Famine
Standard Has Options to Keep Crewing Vehicles So you draw two Vehicles
Every time a creature spell is cast, Animar's first ability triggers, adding a +1/+1 to Animar