I think the first version of Shah of Naar Isle had a template like "Echo Opponent draws three cards," but the rules and templating didn't like it that way, so they changed it to a 0 echo cost with a trigger
Felidar Retreat, Warriors from Oketras Monument, and whatever else you make
The fact that this rabbit commanders ability is optional is also good, since you may want a certain card on top of your deck, or to stay at a certain life total
Either way, for only two mana the Verdict allowed its caster to get a card ahead, and a second copy or other additional discard spell can apply tremendous pressure as early as the third turn
Meanwhile, a blue splash can set you up to play entirely from a defensive mindset and either drain or mill opponents out