In most of the last couple of years of Standard, we've seen varying takes on tokens. In the past, these decks have been powered by cards like Hangarback Walker and Nissa, Voice of Zendikar. We've got lots of great Green and White midrange cards in this Standard format, but they've been largely crowded out by energy cards, Glorybringer, and The Scarab God. That said, the recent bannings have created a little more breathing room in Standard, so maybe now is the time for to return to prominence:

White-Green Tokens - Rivals of Ixalan Standard | CNewman, 5-0 Standard League

• Creatures (19)
• 1 Oketra the True
• 1 Sacred Cat
• 1 Sunscourge Champion
• 4 Adanto Vanguard
• 4 Adorned Pouncer
• 4 Jadelight Ranger
• 4 Merfolk Branchwalker

• Planeswalkers (1)
• 1 Gideon of the Trials

• Instants (2)
• 2 Blossoming Defense

• Sorceries (11)
• 3 Sram's Expertise
• 4 Appeal // Authority
• 4 Servo Exhibition

• Enchantments (3)
• 3 Legion's Landing

• Lands (24)
• 5 Forest
• 5 Plains
• 1 Hashep Oasis
• 1 Tranquil Expanse
• 4 Scattered Groves
• 4 Shefet Dunes
• 4 Sunpetal Grove

• Sideboard (15)
• 1 Aethersphere Harvester
• 2 Baffling End
• 1 Carnage Tyrant
• 1 Cast Out
• 1 Dusk // Dawn
• 2 Fragmentize
• 1 Ixalan's Binding
• 2 Nissa, Vital Force
• 2 Sunscourge Champion
• 1 Thopter Arrest
• 1 Thrashing Brontodon

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Your midgame haymaker is Sram's Expertise. This card does a ton of things for this deck. It allows you to put a bunch of bodies on the board to keep Mono-Red from getting ahead of you. It lets you play Servo Exhibition or one of your other two-drops to stabilize the board, cheat in a Jadelight Ranger which might otherwise be difficult to cast.

Your end game revolves almost entirely around Appeal // Authority. With your ability to leverage the likes of Oketra the True, Legion's Landing, and eternalize creatures to maintain and increase your board presence, Appeal can easily threaten to one-shot your opponent. This is especially true in conjunction with Adorned Pouncer and Authority's ability to tap down opposing blockers. What you have to worry about is opposing removal. That's where your Blossoming Defenses, eternalize creatures, and Oketras come into play. These cards make your threats more resilient, and help to put your opponent further and further behind, even while threatening to kill them outright.

This is a straightforward but powerful deck. Your gameplan is consistent and difficult to disrupt. Your cards are powerful all the way up the curve and you can easily steal games off of unsuspecting opponents. If you're looking for a way to punish opponents who are overprepared for greedy midrange mirrors and Mono-Red, this seems like a great way to do it.