You can exert him and name a card and then reveal the top card of your deck and if you guessed it correctly, you get to draw it and gain 3 lore
It provides an exponentially scaling buff to your board, provided your board is full of legends
It costs 7, and also equips for 7 but gives +7/+7 to the creature barring it, who when it attacks can destroy target creature an opponent controls
This works brilliantly to subvert pricey equip costs like those on Helm of the Host and Kaldra Compleat, freeing up your mana to invest in removal and board-building instead
Since Te Ka - Heartless has the perfect cost as a curve-topper, its on the verge of bomb territory, and it would be my pick out of this pack
While drawing one card for four mana might seem clunky by today's standards, rest assured this card saw a terrific amount of play during the early days of Magic