Against aggro decks, you often side out the Monarch plan anyway, so having Weapon over Fiery Cannonade is always better to leave the board clear
It is a reasonably recovery tool and a reasonable card to close the game out on its own or with support

Hans, Run!" Alpine Houndmaster Angel's Herald Archmage Ascension Asmoranomardicadaistinaculdacar Assembly Hall Avarax Ayara's Oathsworn Behemoth's Herald Behold My Grandeur Beseech the Mirror Beseech the Queen Bogbrew Witch Brainspoil Bringer of the Black Dawn Case of the Stashed Skeleton Clarion Ultimatum Clutch of the Undercity Cool but Rude Coveted Prize Cruel Tutor Cynical Loner Dark Petition Daru Cavalier Demon's Herald Demonic Bargain Demonic Collusion Demonic Tutor Diabolic Intent Diabolic Intent Diabolic Tutor Dimir House Guard Dimir Infiltrator Dimir Machinations Disciple of Deceit Distant Memories Dizzy Spell Dragon's Herald Dragonstorm Forecaster Drift of Phantasms Elvish Clancaller Embermage Goblin Emeritus of Woe Entomb Ethereal Usher Everythingamajig Forging the Tyrite Sword Gamble Gigantiform Gravebreaker Lamia Grim Servant Grim Tutor Growth-Chamber Guardian Grozoth Hoarding Broodlord Hour of Victory Illicit Shipment Imperial Seal Increasing Ambition Infectious Bloodlust Infernal Tutor Insatiable Avarice Johnny, Combo Player Kyscu Drake Lagomos, Hand of Hatred Library of Lat-Nam Liliana Vess Lively Dirge Llanowar Sentinel Long-Term Plans Magitek Infantry Mask of the Mimic

Avatar Aang / Aang, Master of Elements Avatar Aang is a card to build around the different elemental bending arts, and each time you bend an element, you draw a card
Ichormoon Gauntlet Ichormoon Gauntlet is a wild card
Between competitive variety and collectibility, Sun & Moon is a great Pokemon TCGL set to have