Unless a spell or ability allows you to, you can't choose to pay more mana for a spell with a converge ability just to spend more colors of mana. Likewise, if a spell or ability reduces the amount of mana it costs you to cast a spell with converge, you can't ignore that cost reduction in order to spend more colors of mana.
If there are any alternative or additional costs to cast a spell with a converge ability, the mana spent to pay those costs will count. For example, if an effect makes sorcery spells cost {1} more to cast, you could pay {W}{U}{B}{R} to cast Radiant Flames and deal 4 damage to each creature.
If a spell with a converge ability is copied, no mana was spent to cast the copy, so the number of colors of mana spent to cast the spell will be zero. The number of colors spent to cast the original spell is not copied.
Last observed on Scryfall 2 months ago at $0.06. Over the trailing 90 days the price moved between $0.03 and $0.06 across 44 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from BFZ — the lineup includes Foil and Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #194 of *Battle for Zendikar*, the set that shipped alongside the October 2015 Battle for Zendikar release.
Card type: Creature — Elf Scout Ally, color identity green, printed at common. Commons fill the bulk of a booster pack's volume. Mana cost: {2}{G} (3 converted). Keyword abilities: Converge.
Legal across the major constructed formats — Modern, Legacy, Vintage, and Commander — plus Standard rotation play.
EDHrec ranks this card #26,889 in Commander, putting it in the fringe-play tier of the format's playable pool.
Illustrated by Wesley Burt. Rarix catalogs 283 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Wesley Burt
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
The maximum number of colors of mana you can spend to cast a spell is five. Colorless is not a color. Note that the cost of a spell with converge may limit how many colors of mana you can spend.
If you cast a spell with converge without spending any mana to cast it (perhaps because an effect allowed you to cast it without paying its mana cost), then the number of colors spent to cast it will be zero.
