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

Prison decks aside though, lets look at what I think are the best sideboard cards for each color

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

It's important for mechanics in Limited to be able to function well when they are contested, meaning that you can't make your deck entirely out of one mechanic

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

Matching sets: First Chapter - First Chapter