All Forests and all Saprolings are 1/1 green Saproling creatures and Forest lands in addition to their other types. (They're affected by summoning sickness.)
Grenzo, Dungeon Warden enters with X +1/+1 counters on it.: Put the bottom card of your library into your graveyard. If it's a creature card with power less than or equal to Grenzo's power, put it onto the battlefield.
Each opponent can't cast noncreature spells with mana value greater than the number of lands that player controls.Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.
Grapeshot deals 1 damage to any target.Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)
Aeon Chronicler's power and toughness are each equal to the number of cards in your hand.Suspend X—. X can't be 0.Whenever a time counter is removed from Aeon Chronicler while it's exiled, draw a card.
When Contagion Clasp enters, put a -1/-1 counter on target creature., : Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)Cycling—Pay 2 life. (Pay 2 life, Discard this card: Draw a card.)
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)When Mogg War Marshal enters or dies, create a 1/1 red Goblin creature token.
