during this damage calculation only, this card gains DEF equal to that opponents monsters ATK
We played Beatdown Elves in Modern a while ago, which was focused on stacking up as many lords as possible and beating the opponent down, Merfolk-style
Their benefits go beyond mana fixing too: They thin your deck, fuel graveyard strategies like delve or delirium, and can trigger revolt for cards like Fatal Push
Ancient Mew (Promo, 2000) Not valuable in price, but an iconic card thanks to its mysterious runic text and Pokmon: The Movie 2000 promo origins
Anyone whos played MTG for almost any length of time has heard of the OG cards
Also the archetype has a lot of Spells and Traps that can make up for their relatively weak attack power such as Harpie's Feather Duster, a reliable Spell card that ANY deck can use to wipe out the opponent's backrow, Harpie Lady Phoenix Formation which can destroy monsters depending on how many Harpies you have and Hysteric Party which can Special Summon as many copies of Harpie Lady from your graveyard as possible