Nearly unmitigated sac engine that creates Treasure tokens
One card giving you the option of a second copy of your best creature late in the game versus a land early is absurd enough that this often makes the cut in my blue deck regardless of whether my strategy cares about clones
The goal of this deck is to deploy powerful creatures, modify with enhancements like with Forgotten Ancient, and then enhance them even further with modify support cards like Akki Battle Squad
Activating Dalkovan Encampment's last ability creates a delayed triggered ability that will trigger each time you declare at least one creature as an attacker during a declare attackers step this turn
I put Me, the Immortal together for a Yankee Swap at our LGS this holiday season and it ended up being one of the top picks, getting traded for multiple times
For best results in tuning a list, a combination of a checklist, playtesting, probability math, and (most importantly!) playing cards you that find enjoyable is the way to go