The mechanic in this card is great. So simple yet it opens so many possibilities... pure Brilliance!
Something like this is needed to promote trio- and quartet-decks like Zblader and DesertKnight already pinpointed. If this becomes too powerful fueling up such decks, it may need little bit nerfing (cost to 3-4), but first we need to get this in game ASAP!
This counts as a normal card, right? maximum 6?
That would be the most logical way to make this card, but it leaves open the obvious possibility for making
a sibling card for this generating Pendulums instead.