Gragonith, Lightsworn Dragon

This card gains 300 ATK and DEF for each "Lightsworn" monster with a different name in your Graveyard. During battle between this attacking card and a Defense Position monster whose DEF is lower than the ATK of this card, inflict the difference as Battle Damage to your opponent. During each of your End Phases, send the top 3 cards of your Deck to the Graveyard.