The triple phasing can be a fantastic means of protecting a handful of creatures from anything your opponents throw at them
With Caesar, Legions Emperor, you can cycle through your Rabbits to deal an incredible amount of damage to one of your opponents
But if you're on the hunt for rare cards, Collector Boosters are the best option
Here's mine: This is based on what Pokmon my self-insert OC would have if she were in the series, based on her backstory/lore
At the beginning of your end step, if you have a card named Phyrexian Corruption in your graveyard, you may exile it and CARDNAME and meld them into Mishra, Corrupted
When summoned by Bahamut Shark it wouldnt get all his three effects, but the two most relevant ones would still be active: Negation and Recycling