Nuclear V2-A4 Launch

When played, target player has 1 turn until its
caster's V-2 ICBM strikes. Until then, search
your library for "Nuclear Detonation" and place
it in your hand. "Nuclear Detonation" can only
be played after target player's turn is over.
• {x} is the number of creatures on the field.
-THIS SPELL CANNOT BE BLOCKED-