In Yu-Gi-Oh there are many luck based cards in the game. Those cards can be deciding factors between a win and a loss at times. Some better than others, these cards should not be over looked as they can easily change the way the game goes. Don't be easily fooled though, some of these cards can easily make you lose in an instance. I will be speaking about the pros and cons of luck based cards and saying wether they are good or bad in decks.
Many luck based cards have little to no downside, some have major downsides, its all just based off your own luck. One card that has absolutely no downside to using is Agido
His effect is as follows:When this card is destroyed and sent to the Graveyard as a result of battle, roll a six-sided die. You can Special Summon 1 Fairy-Type monster from your Graveyard whose Level is equal to the number rolled. (If the result is 6, you can Special Summon a Level 6 or higher monster.).
This effect has absolutely no downside other than the fact you cant control what Fairy-Type monster you will special summon. In the end though, you still went plus as you were able to put another monster on board to replace him and thin out the deck. Do not be fooled into thinking that this card can mean luck based cards are good for your deck. An example of a card with high risk is the not so well known trap card Lucky Punch
His effect is as follows:Once per turn, when an opponent's monster declares an attack: You can toss a coin 3 times. If the result is 3 heads, draw 3 cards, but if the result is 3 tails, destroy this card. If this face-up card on the field is destroyed: You lose 6000 Life Points.
Now in this scenario the odds of getting 3 heads or tails is slim as the odds are rare to get the same 3 in a row but it can happen. Although it also holds high rewards as you can draw 3 cards essentially going plus BUT you can hit 3 tails and burn 6000 to yourself. Luck Based cards can be either way in the case of Agido going plus and Lucky Punch going minus. Now these are only 2 cases but both prove the point that some luck based cards can be good and some can be bad.
Luck based cards can be judged in multiple ways. Sometimes a card can have an upside and a downside within itself that makes you iffy like in Lucky Punch, but another card that is very new to the game that also does this is Number 85: Crazy Box
His effect is as follows:2 Level 4 monsters
This card cannot attack. Once per turn: You can detach 1 Xyz Material from this card; roll a six-sided die, then apply the result.1: Halve your Life Points. 2: Draw 1 card.3: Your opponent discards 1 card.4: Negate the effects of 1 face-up card on the field, until the end of this turn.5: Destroy 1 card on the field. 6: Destroy this card.
I went through the liberty of making the good effects blue and the bad effects red as these are the usual colors that people use to recognize good and bad. As you can see if the die is to roll on a one or a six then you will hurt yourself, but if it lands on two, three, four, or five then you will help yourself. The question you have to ask is wether or not it is worth it. To me, he is a card worth using because of multiple reasons which I will make another paper as soon as I do this. Anyway, the card is one that is good/bad depending on the way you look at it. It can be considered good because it has a 2/3 chance for something good to happen which some would argue is good. It can be bad because some can argue even though its 1/3 chance of something bad the bad effects out weigh the good ones. Just an example of a card with both ways of luck.
Now, are luck based cards worth using? It all depends on your own playstyle and wether or not it fits or not. Also, you would need to decide wether or not you wish to risk what the card can do for you. This is all player preference on wether or not its worth using or not. Another thing to consider before putting some of these luck based cards into a deck is are they even worth using in the first place? Does that card fit into the deck I am playing, or help me to acchieve a play that can be done multiple times? If that does not happen then do not play the card(s).
To sum up, luck based cards can have good sides and bad sides and wether or not you wish to play them is all player preference. These cards can either make or break a duel just because some of the fact its all off your own luck. Some can make you lose in a second while others can save you. The usefullness of these cards cannot be questioned because if you do get lucky and get the good effect on those risk cards then it can easily win a duel. To end off, luck cards are great cards depending on your own personal views on them.