Counterspell

Fungusaur

Whenever Fungusaur is dealt damage, put a +1/+1 counter on it.

Have

Llanowar Elves

Forest

Regeneration

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
{G}: Regenerate enchanted creature. (The next time that creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Air Elemental

Island

Sol Ring

Clone

You may have Clone enter as a copy of any creature on the battlefield.

Aspect of Wolf

Enchant creature
Enchanted creature gets +X/+Y, where X is half the number of Forests you control, rounded down, and Y is half the number of Forests you control, rounded up.

Control Magic

Enchant creature
You control enchanted creature.

Prodigal Sorcerer

{T}: Prodigal Sorcerer deals 1 damage to any target.