Heres why Golgari sleeves should be your first choice: Golgari Swarm Design: Show off your Golgari Swarm pride with sleeves in black and green and the Golgari emblem
Going down a land generally wont hurt an artifact-centric deck too much either, since they tend to ramp really hard or run a ton of cheap spells
Bloodthirst, convoke, dredge, graft, hellbent, scry, and transmute all received some experimental designs, while morph, shadow, suspend, and vanishing all returned from Time Spiral
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What would you like to see from this type of card in the future
Shadow Puppeteers's last ability overwrites any previous effects that set the creature's power and/or toughness to specific values