You control the effect, so you use it on your turn, which lets you play cards like sorceries and creatures and even drop a land
For the most part, the Rainbow Rare cards introduced in the Pokemon TCGs Sun & Moon block do not command quite the same level of desirability as some of their Alternate Art counterparts
It can struggle against decks that dont care about card advantage or that operate primarily from the graveyard
As a result, completing the full set will likely require multiple collections or trading with other collectors
A big beater for control strategies that also nips cards from graveyards that it turns into food, it has all the elements you want as a one-of in a deck that plays these colors
The very nature of this discussion lends itself to mentioning more recent card releases, since most older sets have had years or even decades to find their way to the spotlight, but Im still going to try and bring up at least a few older cards