Isleback Spawn

five generic mana one blue mana Creature — KrakenPower and toughness4/8

Shroud (This creature can't be the target of spells or abilities.)

This creature gets +4/+8 as long as a library has twenty or fewer cards in it.

The more deadly the lake monster, the shorter the tale.

Showing Shadowmoor#40

Price

0.52 $

Foil 2.57 $

10 printings

Daily estimate from Scryfall, not a shop quote.

2008-05-01
It doesn't matter which library has twenty or fewer cards in it, and you don't have to specify a library. If multiple libraries have twenty or fewer cards in them, Isleback Spawn will still get its bonus only once.

Shroud is a static ability. “Shroud” means “This permanent or player can’t be the target of spells or abilities.”

Multiple instances of shroud on the same permanent or player are redundant.