Enchant creature
Enchanted creature can't attack unless its controller pays .

Brass Man doesn't untap during your untap step.
At the beginning of your upkeep, you may pay . If you do, untap Brass Man.

Remove Bronze Tablet from your deck before playing if you're not playing for ante.
Bronze Tablet enters the battlefield tapped.
, : Exile Bronze Tablet and target nontoken permanent an opponent owns. That player may pay 10 life. If they do, put Bronze Tablet into its owner's graveyard. Otherwise, that player owns Bronze Tablet and you own the other exiled card.

: Brothers of Fire deals 1 damage to any target and 1 damage to you.

Enchant creature
Enchanted creature has mountainwalk. (It can't be blocked as long as defending player controls a Mountain.)

Defender

: Carrion Ants gets +1/+1 until end of turn.

Untapped creatures you control get +0/+2.

Whenever Cave People attacks, it gets +1/-2 until end of turn.
, : Target creature gains mountainwalk until end of turn. (It can't be blocked as long as defending player controls a Mountain.)

, : Add one mana of any color.

Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add .

Target spell or permanent becomes red. (Its mana symbols remain unchanged.)

: The next time an artifact source of your choice would deal damage to you this turn, prevent that damage.

: The next time a black source of your choice would deal damage to you this turn, prevent that damage.

: The next time a blue source of your choice would deal damage to you this turn, prevent that damage.

: The next time a green source of your choice would deal damage to you this turn, prevent that damage.

: The next time a red source of your choice would deal damage to you this turn, prevent that damage.

: The next time a white source of your choice would deal damage to you this turn, prevent that damage.

: Regenerate Clay Statue.

Flying
Clockwork Avian enters the battlefield with four +1/+0 counters on it.
At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1/+0 counter from it.
, : Put up to X +1/+0 counters on Clockwork Avian. This ability can't cause the total number of +1/+0 counters on Clockwork Avian to be greater than four. Activate this ability only during your upkeep.