Rats Time

Rats you control have +2/+2, trample, indestructible, and hexproof until
end of turn. Other Rat spells you cast cost {2} less to cast until your next upkeep. If it is
not your turn you may play a rat card from
your hand as though it had flash, without paying its mana cost. If it is your turn Rat spells you cast this turn cost {b}{b} less to cast
until end of turn.