Maybe they wanted to avoid paper copies of complicated reconfigure creatures, since those involve a lot of moving pieces already, but the general Magic populace can handle effects like this
Maxx C (Effect Monster) This card and effect changed the way of special summoning for a long period of time
If Uncharted Haven is somehow on the battlefield without a chosen color, its mana ability won't add any mana
Card Set(s) -The Seven Warlords of the Sea-[ST-03] CARD VIEW ST03-011 | C | CHARACTER Buggy Attribute Slash Block icon 1 Type The Seven Warlords of the Sea/Buggy's Delivery Card Set(s) -The Seven Warlords of the Sea-[ST-03] CARD VIEW ST03-012 | C | CHARACTER Pacifista Attribute Special Block icon 1 Type Biological Weapon/Navy Card Set(s) -The Seven Warlords of the Sea-[ST-03] CARD VIEW ST03-013 | C | CHARACTER Boa Hancock Attribute Special Block icon 1 Type The Seven Warlords of the Sea/Kuja Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Trigger [Trigger] Play this card
Skip the premium version unless you specifically want it for collection reasons
Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.) Stats: 4/5 Infinite combos in Magic: The Gathering, while maybe rare at one point, are fairly common nowadays