perhaps last question

[wolftamer]

is there a card that lets you search for a creature?
and is there a card that makes a creature indestructable?

[Didley]

Indestructability... or that new artifact from zendikar that makes all creatures indestructible and they get +1/+1 and flying.

[Seras]

cards that make a creature indestructible:

-That Which Was Taken http://magiccards.info/bok/en/162.html
-Shield of the Oversoul(enchant for green creatures) http://magiccards.info/shm/en/242.html
-Shield of Kaldra (equipment) http://magiccards.info/ds/en/139.html
-Indestructibility (enchant) http://magiccards.info/m10/en/17.html
-Elspeth, Knight-Errant (planeswalker) http://magiccards.info/ala/en/9.html
-Eldrazi Monument http://magiccards.info/zen/en/199.html


as for searching for creatures, there are tons of cards that let you do this
i suggest an advanced search on magiccards.info using whatever parameters apply to your specific situation.