Thirst for Discovery didn't force me to discard

[alexander-novo]

Played and resolved a [[Thirst for Discovery]], which normally asks if I'd like to discard a basic land or two cards, but instead didn't ask me that and I didn't discard any cards.

Haven't checked the code yet, but I suspect it might be related to the fact that I have no basic lands in my hand?

[github-actions]

Thirst for Discovery - (Gatherer) (Scryfall) (EDHREC)

{2}{U}
Instant
Draw three cards. Then discard two cards unless you discard a basic land card.

[alexander-novo]

Indeed, this line short-circuits the logic:

mage/Mage/src/main/java/mage/abilities/effects/common/DoIfCostPaid.java

Line 103 in 356d677

if (!this.cost.canPay(source, source, player.getId(), game)) {

If you can't pay the cost, then just nothing happens