6 Rayquaza EX $179.74 A Normal Rayquaza Rayquaza prices just keep going up
Second, we've gotten multiple similar cards, in Beck // Call and Rite of Harmony, that do the same thing as Glimpse of Nature for one more mana with upside, and none of these cards has been playable in Modern (outside of a brief, weird window when Beck // Call worked with Brain in a Jar)
Casually, no, as long as your group is fine with proxies and the card is clearly represented
What we can do is recommend some excellent PC alternatives to scratch that creature collection itch
The cards which will serve as our case studies here are Giovannis Exile (Double Blaze [SM10] 105/095), Meowth (SV-P Promotional Cards 192/SV-P), and Lillies Clefairy ex (Battle Partners [SV9] 126/100)