mtg lost caverns of ixalan expensive cards / The (You may cast cards from your graveyard for their escape cost.) At the beginning of the end step MTG Lost Caverns of Ixalan:

Thats why it yields the name 'Penny sleeve'

All three of these have different specific bits, but they all double the number of +1/+1 counters you put on your Creatures

This kind of boardwide boost is rare, but with careful planning and knowledge of every deck at the table, it can be a clever way to pull ahead at best and an enjoyable but unsuccessful gambit at worst

This means it works with all the same broken nonsense that Cascade does, including Adventures

This blue sorcery that resets all players hands can substantially change a players strategy that could define their victory or loss

Palladia-Mors, the Ruiner Of the new Elder Dragons, this one is my least favorite