Any one, tow or three drop that is near the top of what it does remains in the cube and sees plenty of play even when better cards are printed however the top end just stop seeing play all together.
Then, when Keruga enters the battlefield, draw a card for each other permanent you control with a mana value of three or greater, which will be all of them
I won't lie, there's not a whole lot special going on here, just the typical Auras and Equipment to add things that aren't already covered by our commander's keywords
Yshtola, Nights Blessed Y'shtola, Night's Blessed has an incredible ceiling on its card advantage
1 Mickey Mouse, Brave Little Tailor - $1,184.00 The Early Days Of Lorcana The most valuable Mickey Mouse card comes straight from the earliest days of the Lorcana card game
Flying gives him early evasive pressure, but the real threat comes when he leaves the battlefield: you may pay any amount of accumulated mana to deal that much damage to a player