Andy is far superior to praxie. I suggest dropping michael for an ulu watu 5 star like stanley
Honestly your deck is good enough (the card is OK)
and there is no point to change andy ld to praxie since they have similar stats with different ability (praxie which has almost unstoppable life reduction VS andy ld recover pillz)
but IMO, your deck is really lack of damage
they are very strong in term of power, but the average damage of each cards are 3-4
also, you need to pillz most of your card (except taigo) which means it is very hard to control your pillz
if you can fight with this condition then it is good
if not I would suggest to change ulu watu to something else which is more playable (and has more damage), I think sakrohm or uppers would be a good choice
I've already got Praxie and i like him lots also i tend to be up on the pillz factor because of my high-powered cards i just need more damage
Would Nympheea work well or clash with Michael or should i wriggle Shayna or Buck by replacing Michael with Manfred or the best 4* ( not Jay )
Agree with tanto that your deck lacks damage.
Praxie is a must if you want to survive against a DR-laden opponent, but imho you're forsaking some great skeelz support cards without gaining much by taking on ulu watu. Sasha is better than Taigo, Sandro and chiara are at least on par with nanook and gaia, Greem in many circumstances is more threatening than eddie, and you'd be doing so without the 25% chance of a Skeelz/Ulu 3-1 split or fear of SOA/SOBs.
Nympheea is pretty terrible, that base 2 power lets your opponent just toy around with you. If you wanna switch out a 3*, try Nanook or Felicia instead.