Target creature gets +1/+1 and gains trample until end of turn.

, : Put a -1/-1 counter on target creature. You may tap or untap that creature.

At the beginning of your upkeep, you may put a charge counter on target artifact.

Flying
Whenever Victory's Herald attacks, attacking creatures gain flying and lifelink until end of turn.

Equipped creature gets +1/+0 and has first strike.
Equip

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
When Viridian Corrupter enters the battlefield, destroy target artifact.

When Viridian Emissary dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library.

Put a -1/-1 counter on target creature. When that creature dies this turn, its controller gets a poison counter.

As an additional cost to cast this spell, sacrifice a creature.
Draw three cards.

Create X 2/2 white Cat creature tokens. Shuffle White Sun's Zenith into its owner's library.