He attempts to wasteland my tropical island, in response can i cast daze, returning my trop having the daze target itself?
A spell can never target itself, so no. You need a legal target for Daze to be legally played. Unless you play something else first, you cannot play Daze.
Comprehensive Rules:
415.6: A spell or ability on the stack is an illegal target for itself. (Rules Version Date: February 1, 2004.)
Jaap
Edit: added CR quote