Milling 2-3 useful Shaddolls/Peropero and a fusion/other useful backrow will probably win you the game there and then because of the sheer amount of advantage you gain, but if you mill a bunch of backrow or mill useless Shaddolls (ones that have already been used or Dragon when they have no backrow) it's very mediocre and eats up a normal summon which, while not essential, is often better taken by Math in that case
If a monster is Special Summoned from the GY, or a monster effect is activated in the GY (except during the Damage Step): You can target 1 other face-up monster on the field
Design games, try them out, play them with friends and family, and learn what is fun and what is not about your game
Its common to see an Elves player generate absurd amounts of mana, cast Ezuri, then activate the second ability multiple times to win the game
It serves a similar toolbox purpose in Commander decks, even decks where its the general
Reasoning is especially potent on your first turn of a match, since your opponent will probably expect that you are playing Infernoid, the only other competitive option that runs Reasoning at the current time
