If two or more creature cards leave your graveyard as a single event, Skeleton Crew's second ability will trigger once
As far as rewards go in MTG Aetherdrift you cant pick up something more valuable
Where the binomial distribution tells us the probability of getting a specific number of successes with replacement (i.e., equivalent with shuffling your deck, revealing the top card, noting whether its a land or not, then shuffling again and repeating), the hypergeometric distribution takes into account that card draws are, in fact, not independent (i.e., telling us the probability of getting a specific number of successes without replacement, where cards arent reinserted into the deck after being counted as a success or not)
Bitterblossom provides exactly that, ensuring that your deck is always running in the optimum conditions
Team Rockets Giovanni revealed December 12th Another day and another exciting card reveal for Ascended Heroes