2 Dragon monsters, including a Rokket monster
You can discard 1 card, then target 1 face-up monster on the field; you cannot Special Summon Link-2 or lower monsters from the Extra Deck for the rest of the turn, also destroy the targeted monster, then, if it was a Link Monster, you can Special Summon any number of Rokket monsters with different names, from your hand or GY, up to its Link Rating. You can only use this effect of Quadborrel Dragon once per turn.