Tarkir 2: Mechanics

Bloodthirst: If an opponent was dealt damage this turn, this creature enters the battlefield with PARAM1ASWORDS +1/+1 counters on it. Used on 2 cards: Bloodcrazed Orc, Kolaghan Warblade

Dedication: Each +1/+1 counter you remove from among creatures you control as you cast this spell pays for {1}

. Used on 3 cards: Scorching Justice, Scale-Blessed Captain, Scales of the Dragonlord

Recur: When you cast this spell, you may exile it. If you do, cast target instant or sorcery card in your graveyard with a lower converted mana cost. Used on 1 cards: Ojutai's Lesson

Empower: Whenever you cast a spell, you may sacrifice this creature. Used on 2 cards: Necromancer's Minion, Doomed Conjurer

In card text or details pages, write the mechanic's code name (playtest name) between square brackets, like "[Crittercast]", "[Bushido 1]" or "[Delay 4 {2}{R}{R}]". It will be expanded to the mechanic's name plus reminder text, such as "Suspend 4 – {2} {r} {r} . (Rather than cast this spell from your hand,...)"
To expand a mechanic's name but not its reminder text, include parentheses at the end of the square brackets: "[Crittercast()]", "[Delay 9 {R}()]".