Drytron Meteonis Draconids

You can Ritual Summon this card with "Meteonis Drytron". Your opponent cannot target this card with monster effects. If the total Levels of monsters used for its Ritual Summon are 2 or less, this card can attack all Special Summoned monsters your opponent controls once each. During your opponent's turn (Quick Effect): You can banish monsters from your GY whose combined ATK equals exactly 2000 or 4000, then target 1 face-up card your opponent controls for every 2000 ATK of the total; send that card(s) to the GY. You can only use this effect of "Drytron Meteonis Draconids" once per turn.