If you do ever get to ult this, then it's certainly GGs after the Eldrazi onslaught that is sure to follow
On the other hand, you can bargain a permanent spell even if you won't be able to choose targets for an enters-the-battlefield ability of that permanent once the spell resolves
You see, Gallade EXs Energized Blade requires only 2 Energy and deals 70 DMG + 20 DMG for each Energy the opponent has
Primeval Titan Final Fantasy: Through the Ages #48 Creature Giant Trample Whenever this creature enters or attacks, you may search your library for up to two land cards, put them onto the battlefield tapped, then shuffle
That means you can use activated abilities that require a tap straight away Heartless Hidetsugu, for example, can be slammed onto the table and fire off damage equal to three-quarters of the table's life total in a single turn