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Their Ability, Violent Appetite, lets their trainer heal them for 60 HP when discarding a pokemon card from one's hand, allowing Naganadel & Guzzlord to stay on the field even longer than normal

Still, the fact you can float with Funk Dock does threaten new options, and it seems to me that the deck could use 1 or 2 new ones that serve as double-extenders, not just free bodies with interaction

BT5-072 U Digimon Lv.3 Fake Agumon Expert Color Purple Cost 3 DP 1000 Digivolve Cost 1 Purple 0 from Lv.2 Form Rookie Attribute Virus Type Dinosaur Card Text 1 [Effect] [On Deletion] You may return 1 level 3 Digimon card with an [On Deletion] effect other than [Fake Agumon Expert] from your trash to your hand

That said, getting a bunch of artifacts and cheating out expensive artifacts isnt exactly the most difficult thing to do, so its potential to create bursts of mana lends gives it a place among its fellow lotuses