Cheapest priced copy (Ravnica: City of Guilds): $0.49 at Card Kingdom, near mint, their price list as of .
Crown of Convergence 
Artifact · Rare · Ravnica: City of Guilds · #258
Play with the top card of your library revealed.
As long as the top card of your library is a creature card, creatures you control that share a color with that card get +1/+1.
{G}{W}: Put the top card of your library on the bottom of your library.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica: City of Guilds | 258 | Rare | $0.49 | $0.79 |
4 rulings from Wizards of the Coast
- 1 October 2005A colorless creature on top of your library never gives a bonus, and a colorless creature on the battlefield never gets a bonus.
- 15 April 2013When playing with the top card of your library revealed, if an effect tells you to draw several cards, reveal each one before you draw it.
- 15 April 2013If the top card of your library changes while you're casting a spell, playing a land, or activating an ability, the new top card won't be revealed until you finish doing so.
- 15 April 2013The top card of your library isn't in your hand, so you can't suspend it, cycle it, discard it, or activate any of its activated abilities.