Card to use abroad / Account to buy BTC

GE0RDIE

When I was abroad I used my Nat West debit card quite a bit. More than one person recommended using a certain other card as there were no exchange fees (plus other benefits - I forget!). 
I can't remember the name of the bank/ Card. It was from an unusual bank (online only maybe?) but I'd heard of it. 
I think it was one of the following:
Currentsea
Monza
Revolut
Chase.
I'm not sure of the card was acting as a credit card or debit card or even pre-paid (it doesn't really matter). The thing is, I need to buy some Crypto (I have a reason, it's not for investment) and instead of opening an eToro account (for example) and another account with the card, I thought it would be better to open one account, buy some Crypto and get a card to use abroad. 
The question is, which bank do I need?
I hope this isn't confusing.
Open account, buy Crypto get a card to use abroad. I don't want to use the card to spend Crypto, just Sterling or Euros. 
Many Thanks.  
EDIT:
If it isn't possible, is there a card I would be better of using abroad instead of my Natwest debit?

SiliconChip

I can't comment on crypto other than to say if I was buying it I wouldn't use an account that I need for other purposes due to the risk of it being frozen. For travel spending read this:

https://www.moneysavingexpert.com/travel/cheap-travel-money/

la531983

Monzo allow the purchase of crypto, all foreign transactions fee free at the Mastercard rate.

Never had issues buying crypto with it in the last 4 years 

GE0RDIE

la531983 said:

Monzo allow the purchase of crypto, all foreign transactions fee free at the Mastercard rate.

Never had issues buying crypto with it in the last 4 years 

Thanks, I'm working my way through their websites at the moment. Cheers.