What you want already exists in the card Teleport. The official Teleport spell can be used for 3 mana to move one space as a quick action, but can also move multiple spaces, so it is strictly better than your Blink/Flash Step.
Here is how I would change your card:
Blink
ENCHANTMENT
level 2 card
Quick spell
Casting Cost: 2, (6)
Target: Mage
School: Arcane
When this creature is targeted by an attack you MUST reveal this. If you do cancel that effect and move this creature 1 zone away.