When this artifact enters and when you sacrifice it, create a 1/1 white Rabbit creature token and scry 1. (Look at the top card of your library. You may put that card on the bottom.) {2}, {T}, Sacrifice this artifact: You gain 3 life.

When this Equipment enters, cloak the top card of your library, then attach this Equipment to it. (To cloak a card, put it onto the battlefield face down as a 2/2 creature with ward {2}. Turn it face up any time for its mana cost if it's a creature card.) Equipped creature gets +1/+0 and can't be blocked. {1}{U}: Return this Equipment to its owner's hand.

When this creature enters, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Vigilance Whenever this creature enters or attacks, create a Map token. (It's an artifact with "{1}, {T}, Sacrifice this token: Target creature you control explores. Activate only as a sorcery.")

(Gain the next level as a sorcery to add its ability.) When this Class enters, create a 0/4 white Wall creature token with defender. {W}: Level 2 Whenever one or more noncreature, nonland permanents you control enter, put a +1/+1 counter on target creature you control. {4}{W}: Level 3 When this Class becomes level 3, return target noncreature, nonland permanent card from your graveyard to the battlefield.