Harmonious Archon

Mana cost: {4}{W}{W}
Type: Creature — Archon
Power / toughness: 4 / 5
Set: Throne of Eldraine #338 (mythic)
Price: $0.60 USD

Flying
Non-Archon creatures have base power and toughness 3/3.
When this creature enters, create two 1/1 white Human creature tokens.

Harmonious Archon has 5 printings, first in Throne of Eldraine (2019). EDHREC ranks it #14,683 among Commander cards. It appears most in Neyali, Suns' Vanguard decks (1,022 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: legal
pioneer: legal
standard: not legal
brawl: legal

Public decks that run Harmonious Archon

Rebellion Rising - Phyrexia: All Will Be One Commander, led by Neyali, Suns' Vanguard

Commanders that run Harmonious Archon most

Deck counts from EDHREC.

Often played with Harmonious Archon

Cards that show up in the same decks on EDHREC.

Rulings

2019-10-04: If an effect causes a noncreature permanent to become a creature and sets its power and toughness as it does so, that creature will have that power and toughness; it won't be 3/3. Notably, crewing a Vehicle does not set its power and toughness, so a Vehicle will be a 3/3 creature once crewed.
2019-10-04: Effects that modify a creature's power and/or toughness, such as the effect of Festive Funeral, will apply to the creature no matter when they started to take effect. The same is true for any counters that change its power and/or toughness.
2019-10-04: Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to creatures may become lethal if Harmonious Archon enters or leaves the battlefield during that turn.
2019-10-04: Harmonious Archon overwrites all previous effects that set a creature's base power and toughness to specific values. Any power- or toughness-setting effects that start to apply after Harmonious Archon enters the battlefield will overwrite this effect.