Hi all - this came up in a discussion today and I'd really love to hear what some of your thoughts are! :)
Player A is playing against Player N (competitive REL).
During Player A's upkeep, he removes the last time counter from
Lotus Bloom, then proceeds to his main phase and sacrifices it for mana. Player N calls a judge and indicates that Player A removed the last time counter, but did not cast Lotus Bloom.
My best guess:
Suspend cards have 2 potential triggers, removing a time counter and, “when the last time counter, play this card without paying it's mana cost”. Since there are no time counters on it anymore, you can't satisfy the second trigger's condition. An argument could be made that if you miss the second trigger, the card sits in exile indefinitely.