A 3/3 for 4 mana isn't too impressive, but when she attacks and you pay , you are suddenly attacking with a 6/6 trample, vigilance creature that pumps all your other legendary creatures
Have you ever wondered about the value of a Rainbow Charizard card
Some other discounted Reserved List cards include Yawgmoth's Will, City of Traitors, Metalworker, Replenish, Volrath's Stronghold, Academy Rector, Grim Monolith and Powder Keg
The one mana ability will either tap or untap an artifact
Whenever a nontoken Equipment you control enters, create a token that's a copy of it, except it has "This Equipment's equip abilities cost less to activate." Sacrifice that token at the beginning of the next upkeep
This is a nightmare for your opponent to interact with since even without Eerie it's going to be able to frequently 2-for-1 your opponent, and with eerie, it gets even sillier