Dhund Operative | Creature | Human Rogue | As long as you control an artifact, Dhund Operative gets +1/+0 and has deathtouch. | Magali Villeneuve
Die Young | Sorcery | | Choose target creature. You get {E}{E} (two energy counters), then you may pay any amount of {E}. The creature gets -1/-1 until end of turn for each {E} paid this way. | Ryan Yee
Rush of Vitality | Instant | | Target creature gets +1/+0 and gains lifelink and indestructible until end of turn. (Damage dealt by that creature also causes its controller to gain that much life, and it can't be destroyed by damage or effects that say "destroy.") | Lindsey Look
Subtle Strike | Instant | | Choose one or both —
• Target creature gets -1/-1 until end of turn.
• Put a +1/+1 counter on target creature. | David Palumbo
Thriving Rats | Creature | Rat | When Thriving Rats enters the battlefield, you get {E}{E} (two energy counters).
Whenever Thriving Rats attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it. | Tom Babbey
Metalspinner's Puzzleknot | Artifact | | When Metalspinner's Puzzleknot enters the battlefield, you draw a card and you lose 1 life.
{2}{B}, Sacrifice Metalspinner's Puzzleknot: You draw a card and you lose 1 life. | Vincent Proce