Although it does have a few tweaks based off of new cards
However, being able to deploy Christia and Athena without using releases or summoning rights would have been powerful enough around the 5th to 8th seasons
Naban, Dean of Iteration / Panharmonicon out, have Archaeomancer or similar creature, a flicker spell (for example Ghostly Flicker), Reality Shift and access to infinite mana: similar to the afromentioned Naru Meha Reality Shift line, we do the same but in this line we have two Archaeomancer (or similar) triggers, out of which one will return us Reality Shift back to our hand and the second will be a flicker spell, which we use to flicker the Archaeomancer to then produce two additional ETB triggers, returning both of the instants to our hand
Its a good mana fixer, so you can invest heavily in colorless ramp and use your commander to fix colored mana
The other two cards are strong in their own right as well, but The Winged Dragon of Ra is on a totally different level both in the game and in the anime
Are you also curious how cats became associated with lifelink