If a Drytron card(s) is banished (except during the Damage Step): You can Tribute 1 Drytron monster, then target up to 2 of your banished Drytron cards; add them to your hand. You can reveal 1 Meteonis Drytron in your hand; Ritual Summon 1 Machine Ritual Monster from your hand or GY, by Tributing Machine monsters from your hand or field whose total ATK equals or exceeds its ATK. You can only use each effect of Meteoroa Drytron once per turn.