Siamogale

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)
When Siamogale exploits a creature, target creature gets -3/-1 until end of turn.
Siamogale melilutra is an extinct species of giant otter from Yunnan province, China.
It was about the size of a wolf and weighed as much as 50 kg (110 Ibs).