Caveling Tiger

Whenever a creature blocks it, Caveling Tiger
gets a +1/+1 and hexproof until end of turn.
Whenever Caveling Tiger becomes the target if
a spell or ability, sacrifice it. Create a 0/2 shapeshifter elemental token.
"Unassuming was not the word for a Cave Tiger, but
fast it was. As soon as the soldier blinked, the fluidling
was gone."