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Nevertheless, summoning sickness only applies to creatures, not other permanents like lands or artifacts

We have decks in Standard that both make a ton of mana and have powerful creatures to tutor up

Invasion of Ixalan // Belligerent Regisaur is quite the interesting creature

First Day of Class, Eiganjo Uprising and Heroic Reinforcements join Daring Piracy, Roar of Resistance, Rite of the Raging Storm and Loyal Apprentice for hasty beats

Interestingly, for those looking to mill as many cards as possible using this commander, including a below-average number of creatures in your deck means that Old Stickfingers is more likely to mill a larger number of cards