What are the thoughts of {candles of leng} for an mono blue Edh deck or edh in general?
There are much much better options than {4}{T}: draw a card. Especially in blue. {Azure Mage} for example. Or even big creatures like {Sphinx of Magosi}.
There are one-time draw spells that will produce far greater benefit also, like {mind spring}, {blue sun's zenith}, and {minds aglow}.
If you have an "ally" at the table, {trade secrets} will net you a huge amount of cards at once for very little mana, and a minimum of 4 cards for 3 mana.
pretty good but in that case azure mage is better as a mana sink.
I suppose the candles do have the benefit of being an artifact and not a creature, so they survive board wipes. If your deck is built around card draw, and that draw is super important to keep, it could be worth having.
{mikokoro, center of the sea} is another non-creature card draw engine that's fun in EDH, and usually people don't destroy it because it helps everyone.
I may look into that card, but for testing I will use the candles
{Scepter of Insight}
{Staff of Domination}
{Illuminated Folio}
{Jayemdae Tome}
can all fill that role. The drawback to the Candles is that you are always revealing the draw.