You can Evoke an enemy elemental if it gets exiled by Ragavan, provided you pitch an appropriately coloured card from your hand
A Bant (blue/green/white) Elder Dragon for four mana, Arcades is a 3/5 with flying and vigilance for four mana that allows creatures with defender to attack, and allows your creatures to assign their damage with their toughness rather than their power
Each creature you have on the battlefield also gains one toxic until the end of your turn
This very cheap sorcery can potentially finish off the opponent if the Golbin player has enough creatures, so it's best used as a finisher
Kogla and Yidaro Kogla and Yidaro indeed has draw a card rules text, but its kind of buried in a pseudo-cycling effect
And given its current price tag, we would encourage you to think about purchasing it for your collection if you are at all interested