Alternative Cost: Tap one of your Farmers in any arena.
Take 2 30/0/2 Blue Krill Subordinates and put them into the Ground arena. This unit doesn't untap during your next untap step. Play only during your build step.
Keywords
Alternative Cost
Alternative Cost: [cost]: A selective, static effect that means, "Instead of paying the build cost of this card, you may complete this card by paying the [cost] listed." Alternative Cost must be paid in full, if it is not possible to pay the [cost] completely, you can't complete the card. You must pay the [cost] in the order listed. Any ability that reduces the normal cost to complete a card does not reduce the [cost] in that card's Alternative Cost, unless the ability specifically says so.