Massive Might

Target creature gets +2/+2 and gains trample until end of turn.

Charge Through

Target creature gains trample until end of turn.
Draw a card.

Moss Viper

Forest

Arachnoid Adaptation

Target creature gets +2/+2 and gains reach until end of turn. Untap it.

Fang of Shigeki

Leaping Ambush

Target creature gets +1/+3 and gains reach until end of turn. Untap it.

Tenacious Dead

When Tenacious Dead dies, you may pay {1}{B}. If you do, return it to the battlefield tapped under its owner's control.

Daemogoth Titan

Whenever Daemogoth Titan attacks or blocks, sacrifice a creature.

Forsaken Miner

Forsaken Miner can't block.
Whenever you commit a crime, you may pay {B}. If you do, return Forsaken Miner from your graveyard to the battlefield. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

High Stride

Toxin Analysis

Target creature gains deathtouch and lifelink until end of turn. Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Swamp

Skeletal Swarming

Each Skeleton you control has trample, attacks each combat if able, and gets +X/+0, where X is the number of other Skeletons you control.
At the beginning of your end step, create a tapped 1/1 black Skeleton creature token. If a creature died this turn, create two of those tokens instead.