An upgraded version of Little-Winguard could build on top of its initial effect, draining the opponent's Life Points or destroying one of their cards on the field every time its battle position is switched
Being a miracle means the card needs support, you can hard cast it but it is low value
There is basically no limit to the appearance of Digimon
(Im pretty sure it starts in 2013 and continues into 2021 excluding 2020) -2013/2014 I could not find a difference between the two cards if there is one
It's also one of the oldest cards in the whole game, being first printed in the OCG's Vol.3 pack in 1999 (as a Common card, of all things), and appearing in the very first North American pack, Legend of Blue-Eyes White Dragon, in 2002
If you do, search your hand and library for any number of cards with the same name, exile them, then shuffle