Requires no skill so can be used with any character.
Really easy to understand and use by the auto-duel A.I. because the only strategy involved is excavating a lot.
The best opening play is placing Komushroom face-down.
Revive World Carrotweight Champion by discarding Amarylease.
When Amarylease is in the graveyard, use its effect to summon Guardioak, Lotuswain, or Hermitree for 1 less tribute.
Always use Guardioak, Lotuswain, and Hermitree's effect.
Excavate Marshalleaf to destroy your opponent's monsters, and Komushroom for his spell/trap cards.
Add Bladefender to your hand when he is excavated. You can then summon him to use as a beater and excavate a card when he destroys an opponent's monster.
If you really need to excavate, you can normal summon Marshalleaf and use his effect. Then send him to the graveyard to revive Carrotweight.
Wall of Disruption and Mirror Wall are easy-to-use, splashable disruption, that also prevents the A.I. from decking out too quickly.
You can use WATER monsters to make a beatdown deck by swarming the field and simply relying on their high attack. It's relatively cheap to make since many of them are low rarity or from the card trader. Mako's skill - Mythic Depths is recommended to used in this deck too.
Auto decks are decks that are mainly made to be used with the "Auto-Duel" function. The reason why people often want to go with Auto-Duel is simply because it is done much faster than manual play, since it is fast forwarded and easy to use with just one button. Keep in mind that win rates for auto decks vary depending on what level of Standard Duelists you are going against.
This is my ultimate auto duel deck, still 100% winrate (with BALANCE):
3x - Red Eyes B. Dragon
3x - Red Eyes Zombie Dragon
3x - Cards of The Red Stone
3x - Red-Eyes Insight
1x - Ancient Rules
3x - Red Eyes Spirit
4x - defense traps (Wall of D / Mirror wall / Hallucigenia / Sakuretsu / Widespread...)
(I currently only have 2 REZ but it still works perfectly with 1 blue dragon summoner.)
I've been using a deck like this and I've been having a lot of success, here's my modified deck.
3 Red Eyes B. Dragon
1 Red Eyes Zombie Dragon
3 Cards of The Red Stone
3 Red-Eyes Insight
3 Red Eyes Spirit
3 Wall of Disruption
2 Amazoness Swords Woman
1 Fortress Warrior
1 Mystic Plasma Zone
I only have 2 types of trap, 1 fort war and the rest are non-quick spells so the AI doesn't clog up zones.
-Part 2- Probably can improve this deck, like cards from Stardust Accel. I have Amazon/Fort War for some easy summonables and it's hard for the AI to mess up using them, 2 Forts might clog. To reiterate, the AI has issues if you have more than 2 types of "face down" traps/spells, sometimes it will put down 2 traps, and not a third it needs to survive. Fort x Disruption pairs well.
Is there something wrong with the AI when using Synchros? I have both a water and Blue Eyes deck I added Synchros to, and it never uses it for Synchro Summon, instead it just throws the weak monster out there to get attacked.
And this makes no sense, because the AI doesn't seem to have any problems when it comes to the npc 5ds characters, just my AI auto duels.
What's the point of having it at all in your auto decks, if the AI refuses to use them...