Rapid AugmenterRapid Augmenter gives haste to our creatures with base power 1, and gets a +1/+1 counter and cant be blocked any time we drop a creature we dont cast
The Ring abilities are all tied to whatever creature is your Ring-bearer, so if that creature is killed, bounced, or otherwise neutralized, the benefits are lost until a Ring-bearer is chosen again
The efficient mana cost makes it very easy to cast Activated Sleeper after a board wipe to get a copy of the best creature that died or use it to pull off other tricks
However, once it hits the field, it makes all of the life you gain during your turn into a massive threat
Starfall Invocation is much, much better and allows you to play the one-key-creature control strategy with Haughty Djinn much more easily
If you want to durdle about while still playing with powerful effects, Slogurk is the commander for you