Lyssa, the Red Knight

Non-artifact creatures you control gain infect
While this card is in the command zone or on the battlefield, creatures that gain a -1/-1 counter also gain rabid
{r}{w}{g}{x},{t}: While this creature is attacking, pick X number of rabid creatures on the battlefield or in graveyards. Until end of turn, place them on the battlefield under your controlled tapped and attacking. If these cards would enter the graveyard, exile them instead.