When that ability resolves, the creature becomes saddled until end of turn
On top of the need for setup since Kingdom only banishes 3 when entering the field, and from there on it depends on the opponent going after the monsters themselves in a way kindgom can attempt to protect them
That'll also trigger Brinelin a total of four times (one for the Mnemonic Deluge, then the three Prying Eyes, who still have a combined mana cost of six even if you don't have to pay it), which could severely slow down your opponents
A total of 16 Radiant cards have been printed (covering 15 Pokmon, with Charizard appearing twice) across Astral Radiance, Pokmon GO, Lost Origin, Silver Tempest, Crown Zenith, and a Black Star Promo
A spell that can't be countered is a legal target for Ionize