You can only Special Summon "Infernoble Knight - Renaud" once per turn this way
In the process you're bound to take at least one solid hit, leaving you at risk of being taken out as soon as you use Steam Artillery
But it also can be used to discard a card from your hand to draw a card, and then play the discarded card
The existing threats are all great to cheat into play, so we just have to add in the missing reanimation spells and perhaps a bit of discard and self-mill to accelerate our setup
Kefka lets you even the playing field by tipping card advantage in your favor, and limiting options for opponents to get back into the game
Any token, including creature tokens, Treasures, Clues, and Food, triggers this ability