Hedron Crab is great for example, because it is a seriously quick win con in the landfall deck but also helps enabling dredge strategies
Sets are released there months ahead of international versions, often with exclusive artwork, different card treatments, and promotional releases that never appear in English
A 7/7 Giant for with reach and trample that brings back all of your lands from the graveyard and then boosts another creatures power and toughness equal to the number of lands you have
More recently, decks featuring Brazen Borrower, Frilled Mystic, and Nightpack Ambusher have had an impact on Standard, and tribal Spirits decks including Spell Queller and Rattlechains have been prominent in Modern and Pioneer
Ive changed a Kiki-Jikis target away from Felidar Guardian
Anything else specified in the effect creating the token (such as tapped, attacking, "That token gains haste," or "Exile that token at end of combat") applies to both the original tokens and the Squirrels