Hard-to-Destroy Reptile

Indestructible, Hexproof
Hard-to-Destroy Reptile is dealt damage in the
form of -1/-1 counters. If its power or toughness
would drop below 1, instead tap it
and remove a -1/-1 counter from it.
This creature can block any number of creatures.
During your Untap step, you may choose not
to untap Hard-to-Destroy Reptile. If you do,
remove a -1/-1 counter from it
and it perpetually gets +2/+2.