Nevertheless, summoning sickness only applies to creatures, not other permanents like lands or artifacts
Kaito, Dancing Shadow Kaito, Dancing Shadow is a ninjas dream card
To actively mill your opponent, youll need to catch them with Didnt Say Please, stick an early Eye Collector (probably the most important enabler), or suffer playing Merfolk Secretkeeper (a combination of very two underwhelming cards, Tome Scour and Kraken Hatchling)
Goblin Chainwhirler I can see Goblin Chainwhirler showing up in some niche Rakdos decks that take full advantage of its ETB ping: perhaps if you have a way to give it deathtouch (Archetype of Finality)
The thing is, I really enjoyed having my Niv-Mizzet 10-card flops hit a lot more cards than anyone else