Best level reward cards

Level reward card is what you can obtain by leveling up characters, including gems, cards, skills, extra deck slots. Which cards and skills you acquire is different according to which character you get to level up.

A table below describes what sorts of reward and how many of each you can get by leveling up a character to 35 (current max level).

With so many characters now available, it can be difficult keeping track of them and knowing which ones to get and what cards to aim for, while also considering if they're still effective in the meta. Here are some things to help you get started:

A defensive card that can be used in all decks, which can ensure that your monsters survive. This can also be used offensively during your turn, you can switch your opponent monster's position to whichever status is weaker. Cards like Cocoon of Evolution has high defense but 0 attack, you can switch it to attack so you can destroy it to deal some damage. Try to unlock Mai as soon as you can, and level her all the way to at least 25 to get this card.

Similar to Windstorm, it's a great defensive card that you can use for most decks. Main difference is, this only affects effect monsters, including yours. If you are using a normal monster deck, then this is highly recommended. If you haven't unlocked Odion yet, start using a lot of traps in every duel so you can unlock him early.

It's a useful attack increase equip card that will let you handle high attack monsters, but since it's a trap card, you won't be able to use it immediately when you get it from your deck. Not really a character exclusive card since it's obtainable from Joey at the gate against level 30/40, but since it can be a little difficult to farm him to get a rare drop, it's worth mentioning that an easier way to obtain this is if you level up Keith instead.

Considered to be one of the best defensive card for monsters, this will guarantee that your monster will survive for at least a turn, with the exception that it needs to be face-up, and at the cost of your LP if you don't have any other monsters to protect against your opponent. This is best used if your monster can make a difference if it survives, like Relinquished.

Quite a versatile card since it can be used in different ways. It's good for tribute summoning, dealing effect damage, or protecting you from attacks. This is mostly because it's a flip effect instead of activating when destroyed, which can make a token, essentially making it 2 monsters with just 1 card.

Not suited for most decks, but generally, in a normal monster deck, this is quite useful. With just this 1 card, you can essentially draw your entire deck, only if they are mostly normal monsters of course, it also has a unique interaction with Reload.

Easiest spell removal card that you can get. It's only low on this list because it's obtainable at low level, essentially obtaining it automatically. Once you get better cards, you can switch it to cards like Wild Tornado or Storm.

Has potential in certain decks, being able to summon a monster with a high attack and searchable by using Gateway to Chaos allows for some OTK potential.
→ Example deck

Many of the others level up card rewards aren't really the best for "general" use, but they are good additions to certain decks even if you can only get 1 copy of that card.

It's worth mentioning that these monsters can serve as a good substitute for strong fusion monsters. If you don't have one of the required fusion monster, you can use any of these instead, or put them in the deck even if you have the required fusion monsters to ensure you get the required cards early.
→ Example deck

Most of Tea's card rewards from levelling up are for fairy or light type monsters. If you plan on playing a fairy deck, or if fairy gets strong in the meta due to newer packs, consider levelling her up to get cards like Freya, Spirit of Victory, or Court of Justice since you can get 3 copy of each.

Levelling up Mai offers some harpie cards that are good in harpie decks. They are considered strong mostly due to her exclusive skill that you can obtain as a drop instead of level reward. If you manage to get her skill Harpies' Hunting Ground, consider levelling up Mai to level 35 to get Harpie Lady 1.
→ Example deck

Definitely very strong in their respective decks, and has the ability to turn the duel around if you manage to use them, but since only 1 card is obtainable, drawing it at the right time can be a problem.

To level up faster, make an auto deck that can work against the standard duelists at your levels with a high win rate. You can also purchase Duel Orbs to get standard duelists to keep appearing without limit for an hour long. Make the best of it by making an auto deck first before doing so.

The other way to level up faster is to add friends and get them to send you vagabond with the "Opening Hand: 1 Card," which will give you the most exp even if you lose the duel. Keep in mind, that Vagabond will not always ask you about other players whenever you win the duels, so other players won't be able to send you Vagabond all the time.