>Draw 1 card for no cost at instant speed. What card games

>>50715554
Depends how it was costed. If you play a combo deck and it's cheap enough deck thinning is always good.

>>50715573
No cost, 0 mana, 0 credits, 0 resources.

>>50715554

Literally any card game in which there are cards that enable lockouts/assured win conditions.

Unless the cards themselves are resources, there's no reason to NOT run with this, and very few games do the cards-as-resources thing well, since it's generally extremely unfriendly to kitchen sink play, where people are going to be playing with unreliable decks.

>>50715554
Couldn't work in L5R because there's no generic "instant speed".

Mtg has mishras bauble which costs zero mana lets you look at the top card of a deck and then later draw a card later which is very similar to Jar of Greed since you need to play the trap card in your turn and typically wait until your opponents turn to draw the card.

There are a few free or near free draw a card spells in mtg and combo decks only run them is they also syngergise with the deck e.g. street writh in living end or mishras bauble in a variant of delve when it was new

http://gatherer.wizards.com/Pages/Card/Details.aspx?name=mishra%27s+bauble

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>>50715554
Almost every game, unless you're limited to say, 1 action per turn.

Also, in the example of Jar of Greed it wouldn't be good if you're running shit like Jinzo. So you would have to make sure your cards don't have anti-synergy with your cantrip cards.

Also Jar isn't instant speed per se, as you can only use it after you set it.

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>>50715554
>Doesn't point out that you have to wait until at least your opponent's next turn to get the card
If Jar of Greed was a Quickplay Spell Card it would be an automatic 3 of in every deck. There would be no deck not made better by 3 Jar of Greeds.

Interestingly, Magic did basically this with a large portion of several early sets. The cards weren't costless like Jar is but the extra draw was probably only considered to be worth a half or a quarter of a mana. Compare Clairvoyance to something like Peek which is nowhere near "good" but does the same thing without the slow draw.

>>50715554
You're just making the minimum deck size smaller.

Things that have meaningful downsides and cycle in MtG are used to good success in certain kinds of decks, so it'd probably be neat.

In YGO you'd see it run a whole lot, considering how popular Upstart Goblin was as a Spell Speed 1 Draw 1 with a downside.

>>50715554
Jar of Greed isn't costless anyway. It costs a Spell/Trap slot. You couldn't play it if your slots were all full.

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>>50716036

This is an even more nerfed version of Urza/Mishra's bauble, and it's STILL popular deck-thinning in any deck that runs blue, because it makes decks gofast and hunt out their win conditions.

>>50716090
The hand seeing is relevant and, more importantly, it's a sorcery.
Also drawing a card right away means you can use the card on the same turn.

>>50716090
Probe is way better than Bauble. The information is huge, and its interaction with Snapcaster/Delver/Young Pyro are significant.

>>50716020
>>50716036
>>50716067
>>50716036
I know Jar of Greed isn't exactly no cost, nor is it exactly an instant, but it's the closest card I knew of.

>>50715878
You actually get pretty nasty reliability issues when your ratio of draw to content gets too high, mainly because if you get a starting hand of half your combo and three free draw-one cards you have no damn clue if you're golden or in the shitter.

>>50716943

This is why I think mulligans are stupid. Seriously? Basing your match/strategy/win condition on an opening hand and a mulligan?

>>50715554
Doesn't see play in Yugioh except in shitty Exodia decks, Chain Burn, sometimes Paleozoic, or shit decks.

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>>50715554
>no cost
Opportunity cost.

You can't activate traps the turn you set them, you don't get the card til next turn.
Jar of Greed thins your deck, but you have less immediate options.
It's also vulnerable. And a dead draw if all 5 spell/trap slots are in use.

>>50719853

Yeah, this is why people would rather allow the opponent to gain 1000 LP with Upstart Goblin than run Jar of Greed.

>>50715554

would suck at uno

>>50715614
must set in play 1 turn ago or more

>>50719853
>>50720235
Read the thread.

>>50715554
Netrunner, since the action "play a card" has an inherent cost aside from costs on the card, and the same cost can be spent to draw a card without using another card.

>>50720525
Then the netrunner equivalent would be, Draw 1 card, gain an action.