Mesodae's Lantern states
Your energy reserve is decreased by 1. At the end of the round, receive 3 crystals.
My question is, do you receive 3 crystals one time immediately after playing it, or do you go 3 crystals at the end of each round?
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Sign up to join this communityYou receive 3 crystals at the end of each round while it is in play. The symbol at the bottom left of the card indicates that the effect is continuous, as all end-of-round triggers (that I can remember) are.
Régis Bonnessée, who is the designer of the game posted in this boardgamegeek thread:
The lantern give you 3 crystals each round.
It's a permanent effect like Titus (see the symbol).