Getting the most out of Meddling Mage is hard, requiring reading the opponent, reading the opponent's likely deck list, and evaluating how the game is going to go
The flexibility for casting this card and the mana you generate when it taps is why I include it so high in this ranking
That is what [[Promise of Loyalty]] is
The Theriad Illustrated by Kev Walker Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp

Decklist: Allied Creatures in Pioneer Adeline, Resplendent Cathar | Illustration by Bryan Sola Creatures (25) Anim Pakal, Thousandth Moon x2 Gala Greeters x4 Devilish Valet x3 Rumor Gatherer x2 Adeline, Resplendent Cathar x3 Mondrak, Glory Dominus x3 Resolute Reinforcements x3 Jinnie Fay, Jetmir's Second x3 Jetmir, Nexus of Revels x2 Instants (5) Cabaretti Charm x2 Play with Fire x2 Destroy Evil Enchantments (6) Rabble Rousing x2 Fable of the Mirror-Breaker x2 Windcrag Siege x2 Lands (24) Plains x5 Forest x3 Mountain x3 Boseiju, Who Endures x2 Eiganjo, Seat of the Empire x2 Sokenzan, Crucible of Defiance x2 Jetmir's Garden x3 Battlefield Forge Brushland Karplusan Forest Arch of Orazca Sideboard (15) Destroy Evil Lantern Flare x2 Rite of Harmony x2 Tamiyo's Safekeeping x2 Gleeful Demolition x2 Incandescent Aria Rabble Rousing Fable of the Mirror-Breaker Wedding Announcement x3 I took a stab at making a deck for alliance, which fits Pioneer legality

You choose which player, planeswalker, or battle the Assassin tokens are attacking