Return to Ravnica: new mechanisms and reprints

Return to Ravnica is on the way, hence I decided to introduce you all new mechanics from this set. In the brackets I wrote the guild, which equates with this mechanic.

• Detain (Azorious) - Until your next turn, the detained permanent can't attack or block and its activated abilities can't be activated.
• Scavenge (Golgari) - Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.
• Overload (Izzet) - You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each".
• Unleash (Rakdos) - You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.
• Populate (Selesnya) - Put a token onto the battlefield that's a copy of a creature token you control.

As you see, players will get 5 out of 10 guilds in the first set and remaining 5 in the second set of Return of Ravnica block. In the old Ravnica players got 4 guilds, in the following set (Guildpact) only 3 and in the last(Discension) 3 again. Don't you know which guild suits to you? This short quiz will definitely help you. Click here.

The full spoiler haven't been published yet, but the shocklands are officially confirmed to be reprinted. Shocklands are the non-basic lands from the original Ravnica set that have two basic land types, and come into play tapped unless you pay two life. This is the equivalent of shocking yourself. So my advice to you all - botters is to sell your shocklands as soon as possible. Price have been dropping constantly and we cannot stop this process. Having shocklands in collection is quite risky now. The price of all shocklands will be much lower soon. No except. Market will get flooded  when Return to Ravnica drafts start. In my opinion the price of the most commonly played ones (Hallowed Fountain) will be about 6 tickets. When the full spoiler will be released expect article about how to draft RTR.