Collectible Card Game Headquarters

Describe the Bug:
If Pygmy Hippo leaves the battlefield (e.g. via Unsummon) after it triggers but before the delayed triggered ability resolves, you don't get mana.

Which card did behave improperly ?
Pygmy Hippo

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Post-BFZ dev.

What exactly should be the correct behavior/interaction ?
Once the hippo's attack-and-not-blocked trigger goes on the stack, none of its effects (except preventing combat damage) care whether their source is still on the battlefield.

Are any other cards possibly affected by this bug ?
Still looking for another to card to crib from - the "next main phase this turn" timing is relatively rare.

I haven't actually tested this, just looked at the card's function. I'm reasonably confident of it, though.

Fixed in d95a0b1

Pygmy Hippo creates a legacy card for the effect when you activate it's ability taps all opponent's lands but legacy never triggers so you don't get the mana. It should trigger "at the beginning of your next main phase this turn, you add an amount of Colorless to your mana pool equal to the amount of mana emptied from that player's mana pool this way."

Fixed Pygmy Hippo's legacy never resolves in commit 461623e.
Also similar issue fixed for Scattering Stroke, and Drain Mana also fixed to trigger in your 2nd main if cast during your precombat main phase or during your combat phase.