Sphinx's Ring of Rifts

Equip {3}
Equipped Sphinx has Lifelink
This equipment can only equip a Sphinx with
power or toughness 5 or greater
Equipped Sphinx has "You may pay target
creature's converted mana cost at any time and
gain control of it. If it was in exile or a graveyard,
put it onto the battlefield tapped." and "{8}: You
may choose a card in your side-bar and put it into
your hand. If you do, pay life equal to its mana
cost."