Insects that sacrifice themselves, like Caustic Caterpillar and Haywire Mite, are great to get things rolling, though insects like Circuit Mender and Virus Beetle that offer some value before being sacrificed to effects like Grist, the Hunger Tide and Plumb the Forbidden are more than welcome
And there's Everypony Invited, which lets you throw a party with every creature you control
- Witch-king, Bringer of Ruin
For example, Phlage, Titan of Fires Fury is a new Giant with Escape, obviously following in the footsteps of Uro, Titan of Natures Wrath and Kroxa, Titan of Deaths Hunger
Improvise lets you tap your artifacts to pay for generic mana costs, making it so you only need to use colored mana from permanents to cast spells
The end result is a deck that is low to the ground and casts lots of spells per turn, swinging in each turn to chip down life totals and then closing out the game with a combination of burn and creature combat