I dunno, other than playing Bounce Lands, your deck looks fine
It reads: At the beginning of your end step, if one or more creatures died this turn, you gain that much life and distribute that many +1/+1 counters among creatures you control. Basically, if youre playing a deck that kills things or sacrifices your own creatures, especially in token decks, you get a lot of life and can make your creatures stronger
I wouldn't be surprised if there's a game winning combo in this deck, but it probably doesn't involve Ravos, who provides recursion and access to White, but not a lot else
Other tips include remembering to animate your Inkmoth Nexus if it is targeted by Strip Mine or Wasteland, as that will cause them to exile every Bridge from Below that is in their graveyard
I thought I had a great sealed pool with four on-color rares and a convoke package, but I struggled when I didn't hit "Ral's Reinforcements" on turn two