Burst of Strength

Put a +1/+1 counter on target creature and untap it.

Battlegrowth

Haunting Figment

Vigilance
Haunting Figment can't be blocked as long as you've cast an instant or sorcery spell this turn.

Arachnoform

Enchant creature
Enchanted creature gets +2/+2, has reach, and is every creature type.

Forest

Bombadil's Song

Target creature you control gets +1/+1 and gains hexproof until end of turn. The Ring tempts you. (A creature with hexproof can't be the target of spells or abilities your opponents control.)

Treetop Bracers

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature gets +1/+1 and can't be blocked except by creatures with flying.

Razzle-Dazzler

Whenever you cast your second spell each turn, put a +1/+1 counter on Razzle-Dazzler. It can't be blocked this turn.

Stealth Mission

Put two +1/+1 counters on target creature you control. That creature can't be blocked this turn.

Aim High

Untap target creature. It gets +2/+2 and gains reach until end of turn. (It can block creatures with flying.)

Noggle Bandit

Noggle Bandit can't be blocked except by creatures with defender.

Bramble Armor

When Bramble Armor enters, attach it to target creature you control.
Equipped creature gets +2/+1.
Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)

Island

Bond Beetle

When Bond Beetle enters, put a +1/+1 counter on target creature.

Arachnoid Adaptation

Target creature gets +2/+2 and gains reach until end of turn. Untap it.

Echoing Courage

Target creature and all other creatures with the same name as that creature get +2/+2 until end of turn.

Compelled Duel

Target creature gets +3/+3 until end of turn and must be blocked this turn if able.