Fblthp, who sees sights

When you cast Fblthp for the first time in a game,
Each player gets 3 Souvenir Counters.
{1}{t}: Target player loses a Souvenir Counter
and gains control of Fblthp.
When any player has no Souvenir Counters, they
are destroyed no longer wants to visit them. or they permanently phase out. Who knows.