I just played against the Naya tokens list with Selesnya tokens. Game 1 was close. I stumbled on mana and he drew two Marches against one for me. Still he was on the back foot early (Selesnya tokens can operate quite well with just 2-3 lands!) and I was at 28 life when he finally played the first Heroic Reinforcements. I took most of the damage, attacked back to flip Legion's Landing, and would have stabilized behind an Ajani keeping my tokens bigger than his tokens. However he had Trostani the next turn and that was too much. I never drew Loxodon. I imagine it would've been a game-changer. He had Shanna this game which is immune to all my removal, but no matter how big it got, it could always be chumped with 1/1s.
Sideboard: I brought in Lyra, The Immortal Sun, Knight of Autumn (removes enchantments), and one Vivien Reid (also removes enchantments), taking out Legion's Landing as usual, and Adanto Vanguard (since it can't attack easily into 1/1s). I was debating whether to bring in Citywide Bust to kill the Shanna, but since it can be chumped, I decided not to. I also decided not to bring in Ixalan's Binding because it's ineffective against tokens and Shanna is immune. The major concern with this sideboard plan is that I have so many 5-mana cards.
Game 2 was not so close. On the play I curved out nicely into Trostani on turn 5. He was forced to Ixalan's Binding it, but I had Conclave Tribunal for the Binding and he folded.
For game 3 I decided the curve was too high and took out Vivien for Karn. I figured that I'd be able to chump block well to keep him in play.
Game 3 was also one-sided. He color screwed out of green mana and I overran him. He had Adanto Vanguard too - a card I took out because of its weakness in the mirror. He was extremely zealous to keep it in play (paid 8 life), not to mention extremely zealous about not chump blocking, such that when he finally drew Temple Garden he was already on 2 life. It seems like he went for the high-value play at the expense of life points all the time (too often?) and paid the price. Note to self, in games like these:
1) Check whether History is going off - if opponent's is going off, trade knights if possible; if yours is, save them!
2) Check how many convoke cards you have. If you're intending to convoke soon, avoid trades; otherwise, trade so your opponent can't convoke either.
3) Assess how many points each token is likely to be worth. For example if Adanto Vanguard attacks into a 1/1 and pays 4 life, that's like the 1/1 attacking for four damage. If that's unlikely on the board + you aren't intending to convoke + the life totals might matter, then you should absolutely block.
4) Check if you're close to an anthem. Your 1/1 for their 1/1 is not a good trade if you have Trostani in hand and might topdeck a land to play it next turn.
5) If your life total is getting dangerously low and you need to chump to survive, then assess how many points of damage chump blocking might save you. Blocking Adanto Vanguard is 3 points of life, but if you can block Venerated Loxodon on the next turn, that's 4 points. Of course, factor in also possible anthems removal etc.
I've had two consecutive 5-0's in traditional constructed. The deck's good