Skreggat, the Ravenous

You cannot control creatures named "Rat Colony"
or "Relentless Rats".

You cannot copy or create copies of Legendary creatures or spells you control.

Whenever Skreggat, the Ravenous attacks, sacrifice 2 other rats: Mill 2, then until end of turn whenever you would create a rat token, instead create those tokens multiplied by the number of
lands you milled during combat.