Researcher-General Iweillo

When Researcher-General Iweillo enters the battlefield, put a Phylactery counter on target permanent. As long as a Phylactery counter is in
play, Iweillo is indestructible.
Whenever a card is exiled, you may pay {u}. If you
do, draw a card.
{t}{x}{2}{w}: Choose a card in exile with converted
mana cost X. Until the end of your turn, you may
play that card without paying its mana cost.
"It has been many life's works to bring sight to the
Blind Eternities."