If the manabase allows, Dimir can benefit greatly by dipping into Orzhovs toolbox for some additional stabilization and removal, although it already has access to a formidable suite of removal tools
Whenever Wakka deals combat damage to a player, destroy up to one target artifact that player controls and put a +1/+1 counter on Wakka
Note: While I never delved too far into the Final Fantasy video games, I did play FF8 when it released (that opening cinematic blew my mind as a lad), and I nearly beat FFX , but was derailed by a crippling BlitzballBlitzball addiction even without the Jecht shot
If you're curious about the tribe, I trumpeted about it in my Budget Elephant Tribal article, which has a trunkload of ideas that you can assemble for peanuts if you take out Elephant Graveyard (thank you, Reserved List)
This little guy has some adorable artwork with tiny little buddies walking around with them