Where Zone starts to get some more value is when you have Wraths to contend with, when you have Cradle to power up, when you have prot green creatures to block and when you have things that pump up all your dorks
Build your board with artifacts and get free equips when cats enter the battlefield
If the creature with mentor leaves the battlefield with mentor on the stack, use its power as that creature last existed on the battlefield to determine whether the target creature has less power
If you are a slow deck then a Batterskull is a great stall tool and with enough mana and almost immovable object
On the other hand, Melira, the Living Cure states that no matter how many poison counters you would get in a given turn, youll actually only get one
Not every deck is going to run Swiftfoot Boots, but giving every deck access to protection makes the Boosts a valuable card to pick up