green infect cards mtg not to mention a blast to play Infect • (Mono-Green Commander deck)

Any player who lacks good blockers is going to get creamed just for being alive and able to deliver on those sweet, sweet triggers

Any card abilities which happen when a player pays a cost to use them (activated abilities) or automatically when specific conditions are met (triggered abilities) must also pass through the stack and can be responded to the same way (though you would need a card that says target ability to interact with one)

Clock of Omens

Doomraider Encampment Plane: Ushval Whenever a creature enters the battlefield, it gains Haste and Trample until end of turn

Modern Horizons 2 is one of the few sets to give them any significant focus, including the card Squirrel Sovereign