With that knowledge under my belt, here is where I would start with a Delver deck in Legacy to abuse Treasure Cruise
Delney also gives each creature under their protection evasion, enabling them to avoid being blocked by creatures with power 3 or greater, making swarms of 1/1 and 2/2 tokens into serious threats against most boards
The creature side of things is Questing Druid, a two-mana green 1/1 that reads: Whenever you cast a spell that's white, blue, black, or red, put a +1/+1 counter on Questing Druid. In the right deck, this card isnt just card draw but a terrifying threat, as it could grow absolutely massive fairly quickly
if your opponent cant remove this card or block it, they'll be unable to attack you for the remainder of the game