Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

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.)

Creatures with flying can block only creatures with flying.

Creatures without flying have reach. (They can block creatures with flying.)

, Discard a card at random: Target creature gets +2/+2 until end of turn.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

: Dirtwater Wraith gets +1/+0 until end of turn.

: Prevent the next 1 damage that would be dealt to any target this turn.

You gain 1 life for each Forest on the battlefield.

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

When Merfolk Seer dies, you may pay . If you do, draw a card.

Cumulative upkeep—Draw a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of your end step, sacrifice a land and discard your hand.

Choose one —

• Target player draws a card at the beginning of the next turn's upkeep.

• Target creature gains flying until end of turn.

• Target creature an opponent controls phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

Enchant creature

At the beginning of your upkeep, sacrifice Serra Bestiary unless you pay .

Enchanted creature can't attack or block, and its activated abilities with in their costs can't be activated.

: You may put a land card from your hand onto the battlefield. Activate only as a sorcery.

When Undying Beast dies, put it on top of its owner's library.