Items can be used immediately and have passive or activated abilities
Four or more cards is a lot to ask
A 3/3 with reach for three mana that provides modified creatures under its owner's control with trample, whenever one of its owner's modified creatures deals combat damage to an opponent, its controller can your library for a basic land card, put it onto the battlefield tapped
Dead Ringers This is a particularly interesting case, because it's purely about semantics
While I miss making my own sound effects when I send baby dragons into battle, and dabbing hastily at cards Ive spilled cider on in my excitement, Arena builds on the lessons learned by the rest of its genre, and takes away a lot of the friction and fuss that I will (grudgingly) admit exist in its paper incarnation
High-value orders receive additional protective measures including cardboard corner protectors and double-boxing