MTG >Combos >Goblin Fireslinger +Phyrexian Altar +Lightning Greaves +Koll, the Forgemaster +

With Knoll in play, cast Goblin Fireslinger Equip it with Lightning Greaves and tap it to deal 1 damage to the opponent sacrifice Goblin Fireslinger with Phyrexian Altar to add one red mana Knoll's ability will trigger, return Goblin Fireslinger to your hand Repeat the process for infinite damage.