Scroll of Isildur

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
[I] Gain control of up to one target artifact for as long as you control Scroll of Isildur. The Ring tempts you.
[II] Tap up to two target creatures. Put a stun counter on each of them.
[III] Draw a card for each tapped creature target opponent controls.