Its basically lets cast unreliable spells on repeat and pray for the best outcome
9 mana card is bad if your winning but also very underwhelming when youre behind clearing the enemy board is a big W but it will cast alot of spells which are totally useless for example kill all frozen enemies twice but no one is frozen.
the 10 mana card can be OP but its hoping for the right cards and it can backfire alot cause for example if your ahead it can cast firestrike on no enemies wasting a card for nothing.
I played this RNG mage alot cause I like a bit of randomness but not when its total garbage and I am just wasting spells on air.
Any consistent deck will win vs RNG mage 7/10 times or even maybe 8/10 times.
Pretty sure it will never see competitive play and no the buffs didnt help one bit.