You essentially draw a card on attacks, but you get to cast that card for free if you built your deck with mostly odd mana value cards
I had heard rumors that we were talking to Marvel about a potential Universes Beyond collaboration, but just rumors
Luckily the peerless villains, compelling heroes and influential magitek aesthetic of this game have been captured in the new Revival Trance Commander precon
Additionally, decks with their own alternate win conditon, like combo decks or Toxic strategies that win by giving players poison counters, can be less vulnerable to Exile effects by including more instants and sorceries and fewer permanents
Cards with suspend get put into exile with time counters on them and at the start of your upkeep you remove a counter to cast them for free once they are all removed
To determine how many land drops you have remaining this turn, compare the number of lands you can play (which is normally one but can be increased by other effects) with the number of lands you've played and land drops you've given up this turn