Can you play use Jegantha, the Wellspring as a companion in a deck that contains an Aladdin's Lamp from the Arabian Nights Set considering the double 5?
[IKO] Jegantha, the Wellspring
you can. Lamp costs {10}. even if it costs {5}{5}, it would work for the same reason you can play it with {x}{x}. many symbols are WUBRG and <>, not numbers
@BlindTherapy That is not accurate jegantha and chalice are not friends confirmed by Eli Shiffrin on twitter.