When Threefold Signal enters, scry 3.Each spell you cast that's exactly three colors has replicate . (When you cast it, copy it for each time you paid its replicate cost. You may choose new targets for the copies. A copy of a permanent spell becomes a token.)
Creature tokens you control have haste.Parley — At the beginning of combat on your turn, each player reveals the top card of their library. For each land card revealed this way, you create a 1/1 green and white Citizen creature token. Then creatures you control get +1/+1 until end of turn for each nonland card revealed this way. Then each player draws a...
FlyingWhenever another permanent you control leaves the battlefield, if it had counters on it, investigate. (Create a colorless Clue artifact token with ", Sacrifice this artifact: Draw a card.")
DeathtouchThe first instant or sorcery spell you cast each turn has casualty 2. (As you cast that spell, you may sacrifice a creature with power 2 or greater. When you do, copy the spell and you may choose new targets for the copy.)
When Perrie enters, put a shield counter on target creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)Whenever Perrie attacks, target creature you control gains trample and gets +X/+X until end of turn, where X is the number of different kinds of counters among permanents you control.
Whenever you attack, target attacking creature can't be blocked this turn. It connives. Then choose another attacking creature with lesser power. That creature gains double strike until end of turn. (To have a creature connive, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)
When Avenger of Zendikar enters, create a 0/1 green Plant creature token for each land you control.Landfall — Whenever a land you control enters, you may put a +1/+1 counter on each Plant creature you control.
When Dogged Detective enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)Whenever an opponent draws their second card each turn, you may return Dogged Detective from your graveyard to your hand.