Natural Affinity by paying , causing all lands to become 2/2 creatures in addition to their other types.
Cast
Darkness Descends by paying , putting two -1/-1 counters on each creature.
Each land dies as a state-based action due to having 0 toughness, as well as each creature that had toughness 2 or less.
Necroskitter triggers for each creature and land your opponents controlled that died, returning them from their graveyards onto the battlefield under your control.
Notes
You can prevent your own creatures / lands from dying by also having an anthem effect that boosts their toughness on the battlefield.
Results
Gain control of all lands opponents control.
Gain control of some creatures opponents control.
Mass Land Denial.
Metadata
Bracket tag
RuthlessBracket 4+
For competitive decks at brackets 4+
1
2
3
4
5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.