Spike Feeder enters with two +1/+1 counters on it. {2}, Remove a +1/+1 counter from Spike Feeder: Put a +1/+1 counter on target creature. Remove a +1/+1 counter from Spike Feeder: You gain 2 life.
Spike Weaver enters with three +1/+1 counters on it. {2}, Remove a +1/+1 counter from Spike Weaver: Put a +1/+1 counter on target creature. {1}, Remove a +1/+1 counter from Spike Weaver: Prevent all combat damage that would be dealt this turn.
Gemstone Mine enters with three mining counters on it. {T}, Remove a mining counter from Gemstone Mine: Add one mana of any color. If there are no mining counters on Gemstone Mine, sacrifice it.
At the beginning of each player's upkeep, that player chooses a color. Until end of turn, lands tapped for mana produce mana of the chosen color instead of any other color.
Target player reveals their hand, then you choose a card other than a basic land card from it. Search that player's graveyard, hand, and library for all cards with the same name as the chosen card and exile them. Then that player shuffles.
{1}, {T}: Exile any number of cards from your hand face down. Put that many cards from the top of your library into your hand. Then look at the exiled cards and put them on top of your library in any order.