I used to work in an office, I had a very normal job before this, and now this is my life
Four mana equals three cards making these the Harmonize or Concentrate of card draw
ST9-06 SR Digimon Lv.6 Alternative Art Imperialdramon Dragon Mode Color Blue Green Cost 13 DP 12000 Digivolve Cost 1 BlueGreen 4 from Lv.5 Form Mega Attribute Free Type Ancient Dragon Card Text 1 [Effect] [When Digivolving] You may play 1 level 4 or lower blue Digimon card and/or 1 level 4 or lower green Digimon card from this Digimon's digivolution cards without paying their memory costs
Combined with its DP-reducing effect, you can easily dominate the field and achieve victory
Yubel can be Special Summoned by revealing Elemental HERO Neos Kluger from the Extra Deck for the effects of Fusion Dispatch and Keeper of Dragon Maigic, and with that set up, destroy Yubel et al, with the effects of Unchained monsters, allowing you to Special Summon Yubel Terror Incarnate and Yubel The Ultimate Nightmare
One of the worst designs I have seen is in the modern game is Galatea, the Orcust Automaton allowing you to just not set a card from your Deck if you dont want to, after using its first effect