Spore Flood

Enchant land you control.
Enchanted land has "{t}: Add {1}{s}"
Whenever a land enters the battlefield under
your control, create a 0/1 Spore Mine creature
token with flying.
Spore Mines you control have: "{1}, Sacrifice this
creature: This creature deals 2 damage to target
attacking creature." and "{t}, Sacrifice this
creature: Add {s}".