This is best for when opponents are attacking you, but you can also pay only black mana to cast it when an opponent is being attacked
Inside a Collector Chest, youll find: five booster packs (these will be from recently released sets, but the exact quantity of each booster pack type is not guaranteed, so for example you may have 2 Shrouded Fable packs, 1 Temporal Forces and 2 Paldean Fates, though this wouldnt necessarily be the case for another tin of the same type), foil cards featuring the Pokemon shown on the tin (these will be the same for each tin of the same type), a Pokemon coin, 4 sticker sheets, a mini portfolio binder for storing a small number of cards, a notebook and, finally, a code card to unlock cards on the digital version of the Pokemon TCG, Pokemon Live
Theres no definitive proof for keeping/removing them
Cultivate You might be shocked to hear this, but Cultivate is the fourth most popular Commander card, according to EDHREC