Hunting Triad

Create three 1/1 green Elf Warrior creature tokens.
Reinforce 3—{3}{G} ({3}{G}, Discard this card: Put three +1/+1 counters on target creature.)

Krenko's Command

Create two 1/1 red Goblin creature tokens.

Create a 1/1 green Elf Warrior creature token for each Elf you control.

Enchant creature
Enchanted creature has "{T}: Create a 1/1 green Elf Warrior creature token."

Target creature's controller sacrifices it, then creates X 1/1 green and white Elf Warrior creature tokens, where X is that creature's power.

Create two 1/1 red Goblin creature tokens.
Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Create a number of 1/1 red Goblin creature tokens equal to two plus the number of cards named Goblin Gathering in your graveyard.

{T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.