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.
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.
Last observed on Scryfall 2 months ago at $0.15. Over the trailing 90 days the price moved between $0.03 and $0.15 across 54 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 #220 of *Battle for Zendikar*, the set that shipped alongside the October 2015 Battle for Zendikar release.
Card type: Creature — Elf Warrior Ally, color identity green/blue, printed at uncommon. Uncommons fill the middle-tier slots in a standard booster configuration. Mana cost: {X}{G}{U} (2 converted). Keyword abilities: Flying and Converge.
Legal across the major constructed formats — Modern, Legacy, Vintage, and Commander — plus Standard rotation play.
EDHrec ranks this card #24,307 in Commander, putting it in the fringe-play tier of the format's playable pool.
Illustrated by Dan Murayama Scott. Rarix catalogs 1,317 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Dan Murayama Scott
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
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.
You can choose any value for X. The value chosen for X doesn't directly affect the number of +1/+1 counters Skyrider Elf enters the battlefield with, but it does let you pay more mana and thus spend more colors of mana to cast it. For example, you can choose 0 for the value of X and pay {G}{U} to cast Skyrider Elf for two +1/+1 counters. You can also choose 3 for the value of X, making its mana cost {3}{G}{U}, and pay {W}{U}{B}{R}{G} for five +1/+1 counters.
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.
