Supporter Prof. Rowan/ Cynthia's Feeling/ Togekiss

1) Is there any restrictions to Professor Rowan's use?
2) If I only have Cynthia's Feeling, can I still play it since there is no restriction on the card?
3) How does the Pokepower of Togekiss works?

1.0) If you have Professor Rowan and one other card in your hand, you would play Professor Rowan, keep the 1 card that was left in your hand, shuffle your deck, and then draw 4 cards.
1.1) If Professor Rowan is the only card in your hand you cannot play it, as the card text requires you to keep at least 1 card in your hand, then shuffle your deck, and then draw 4 cards.
2.0) If you play Cynthia's Feelings and have no cards in your hand, you shuffle your deck and draw 4 cards, plus 4 more if one of your Pokemon was Knocked Out last turn.
3.0) The "attach them to your Pokemon in any way you like" means that the Energy cards can be attached to more than one of your Pokemon. For example, if you get 5 Energy cards and have 3 Pokemon in play, you could attach 2 Energy to the first one, 3 Energy to another one, and 0 Energy to the last one.
3.1) The Energy cards can be attached to any number of your Pokemon, in any >ombination that you want.