Brimstone Roundup (Outlaws of Thunder Junction 115) - Uncommon Magic: The Gathering Card

Whenever you cast your second spell each turn, create a 1/1 red Mercenary creature token with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."
Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)