Bad

 Not Great

Good

Great!

Killer!!!

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**

***

****

*****

Starter Deck

5DS1-EN041  5DS1-EN042  5DS1-EN043  5DS1-ENPY1 
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He at least gets the ATK of all Level 2 or lower monsters you have but it only gets ATK equal to the ATK of the Level 2 Monsters you have when he is summoned and he needs a specific Tuner monster.   He needs 2 monsters for a 2600 Normal Synchro monster, which is pretty bad, especially since his DEF is low and he has no decent effect.   His only drawback is his low ATK boost, which only works on Warrior-Type monsters but everything else allows him to get 4 stars, especially his ability to bring back himself after getting destroyed in battle!  Since this set ends before I can finish the row, a Proxy Card will take its place.   
5DS1-EN037     5DS1-EN038   5DS1-EN039    5DS1-EN040   
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It does destroy the attacking monster but it doesn't stop any other of your opponent's attacks like Mirror Force or Negate Attack, which are better choices.   Negate monster effects from DaD, Sangan and SPoN! The fact is that Destruction Jammer is better since it requires the same cost and can activate against Spell and Trap Cards as well as Effect Monsters.  1000 LPs isn't much of a cost but it stops only 1 Trap Card when Royal Decree and Jinzo stop all Trap Cards with no cost so use them instead.   Resurrect your BEWD or another strong playable Normal Monster to your field to damage your opponent's LPs! 
5DS1-EN033 5DS1-EN034 5DS1-EN035 5DS1-EN036
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Weaken an opponent's monster to be destroyed more easily by your weaker monsters or use it on 1 of your monsters to help you use it for Synchro Summoning! Block an attack by an opponent's monster and combine this with Scrap-Iron Scarecrow to constantly stop attacks! Scoop up 3 of your best 1500 ATK or fewer Normal Monsters to defend your LPs or Synchro Summon later! Surprise your opponent by destroying that monster your opponent planned to defeat you with! Since it doesn't work on Special Summons, its rating is 3 stars.
5DS1-EN029 5DS1-EN030 5DS1-EN031 5DS1-EN032
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Call your strongest Level 4 monsters straight from your hand then use them for Synchro Summons or Tribute Summons! Since you can't use more than one of this card per turn, it's rating holds at 3/5.  Send a weak Normal Monster you have to your Grave and summon virtually any monster you want from the Graveyard! Activate virtually anytime you wish and save your monsters from being attacked! Not only does it block an attack but it goes face down instead of to the Graveyard! The fact is, it cannot be activated more than once per turn.
5DS1-EN025 5DS1-EN026 5DS1-EN027 5DS1-EN028
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The +700 ATK is temporary and that's why this card gets only 2 stars. Discard a bad card like a high-level monster you can't summon when you activate this card but it's really not too great a card. Since most monsters your opponent has will be face up, losing 1 card is nothing compared to leaving your opponent potentially defenseless! Come on, UDE, what is wrong with you? Clearly MST is better than this card. Sure it's been printed more times than this card but it's better.
5DS1-EN021 5DS1-EN022 5DS1-EN023 5DS1-EN024
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Don't run this without your Synchro monsters for obvious reasons. The damage is minimal, especially when taking the effort needed to Synchro Summon. Retrieve any Warrior-Type monster you want without any drawback! It can take out your opponent's last defense but still a situational card.
5DS1-EN017 5DS1-EN018 5DS1-EN019 5DS1-EN020
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Unlike UFO Turtle, this guy has more monsters to choose from like Yubel or Sangan, both of which are decent cards. Bring this guy out and another decent monster like a second MC or CK to prevent virtually all attacks from your opponent! He destroys an opponent's monster but you lose a defense from your opponent's attacks. It can power up 1 of your monsters and prep it for Synchro Summoning but the boost isn't very much and 1 level gained might not be enough to summon your Synchro monster.
5DS1-EN013 5DS1-EN014 5DS1-EN015 5DS1-EN016
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Same as 5DS1-EN002's comments. Another weak Tuner monster but it's because and only because he's a Tuner monster that his rating isn't 1 star as he frequently ends up getting destroyed. Its low base stats an the fact that it can only select the original ATK of opponent's monsters are why it's rating is only 3 stars. Other than that it's a decent card to use! Summon monsters like Solar Flare Dragon or I suppose Magna Drago for Synchro Summoning but his uses are limited(literally).
5DS1-EN009 5DS1-EN010 5DS1-EN011 5DS1-EN012
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This is the "great ocean lord"? Hardly! He's no match for even Sorcerer of the Doomed (1450 ATK) She(he?) can survive on the field longer than most monsters with her stats but Spirit Reaper is better since he stay on the field against any monster. Unimpressive stats but he does make summoning Junk Warrior or another Level 5 Synchro monster much easier. Thankfully, his ATK doubles if Normal Summoned, letting him stay for one turn but after that, he's no match for more than 90% of the monsters out there.
5DS1-EN005 5DS1-EN006 5DS1-EN007 5DS1-EN008
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2100 DEF may allow him to survive against some monsters like Gemini Elf and Cyber Dragon but will not allow him to get a higher rating with only 100 ATK and no decent effect. He has 2500 DEF but is unworthy of being used when Millennium Shield has 3000 DEF for the same tribute so use him instead. A serpent with only 2900 ATK and DEF is sure to go into a death spiral when facing monsters like BEWD and stronger or cards like Bottomless. Same as 5DS1-EN005's comments.
5DS1-EN001 5DS1-EN002 5DS1-EN003 5DS1-EN004
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His only reason for getting 2 stars over 1 star is because he is a Tuner monster. Same as 5DS1-EN001's comments. Yes he can be used for Synchro Summoning but he's not playable so use a playable monster instead. This guy is perfect for Synchro Summoning because unlike Axe Raider, he can stand up to stronger monsters. In fact, he's perfect to start any duel off!