Yuriko turns your ninja's into card advantage, letting you reveal the top card of your library and putting it into your hand when a Ninja deals combat damage to a player
Hexproof, on the other hand, only stops your opponents from targetting the equipped creature, meaning you're free to play as many combat tricks or buffing spells as you like
If the creature deals combat damage to a player, it will get that many +1/+1 counters more than once
Please note the following: The daily reset time is 6 AM UTC, when new expansions and events are typically released
Theres also a nice synergy to be had with Carpet of Flowers in blue-green decks, generating a massive amount of mana
That turns every creature with an ETB effect into repeatable value