This deck is aiming to be a Birthing Pod-esque toolbox deck in Standard commemorating the fall of Birthing Pod in Modern. Using Yisan as the Pod, and Chord of Calling to tutor creatures, this deck has a lot of silly interactions to help alter the gamestate.

Sedge Scorpion is there as a combat trick to kill something big on one verse counter.

Warden of the First Tree is there to come out as a 3/3 on one verse counter for Yisan. Can trade up to things like Seeker.

Aegis of the Gods is there to fizzle a burn spell or a hate spell like Villainous Wealth.

Brain Maggot is there to be a Thoughtseize at instant speed, after their draw step.

Arashin Cleric for lifegain at instant speed.

Quickling to bounce Yisan to fizzle burn spells and create a 2/2.

Hornets Nest to block 12/12's and bait out hornet tokens.

Illusory Angel because its 3 verse counter value.

Rec. Sage because Rec. Sage.

Gravedigger as an Eternal Witness to get back stuff like Resolute Archangel.

Clever Impersonator with Yisan can create sweet combos.

Polukranos as creature removal.

Siege Rhino because Siege Rhino.

Archfiend of Depravity as a Wrath-esque effect.

Prophet of Kruphix to get Yisan combo 2 counters per turn.

Doomwake Giant for token wipes.

Resolute Archangel as an endgame out.

Hornet Queen as a finisher/value blocker.