Kaidou, Knight of Judgment

When Kaido enters the battlefield, create two
1/1 Black Dark Reunion Minion creature tokens.
At the beginning of your end step, you may
sacrifice a creature. If you do, exile Kaido
and return him to the battlefield.
If at any time you control six or more Minions,
Kaido gains +3/+3, vigilance, and trample.