Lae'zel, Githyanki Warrior

Double strike
Specialize {1}
When you cast this spell, it gains "When this creature becomes the target of a spell or ability an opponent controls, you may exile this creature, then return it to the battlefield under its owner's control."

Reliquary Tower

You have no maximum hand size.
{T}: Add {C}.

Lae'zel, Illithid Thrall

Double strike
When this creature enters or specializes, conjure a duplicate of a random creature card from an opponent's library into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell."

Rogue's Passage

{T}: Add {C}.
{4}, {T}: Target creature can't be blocked this turn.