
Enchantment
Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.

Tribal anatomic buff scaling with shared creature types.

Stacks counters for a chosen type to pump tribal attackers.

Anthem plus card draw for your tribal swarm.

Big static anthem for a chosen creature type.

Creates attacker tokens that boost your tribal aggression.

Converts wide creature count into direct damage.

Punishes opponents as your token swarm enters.

Counters per creature ETB make a snowballing wide board.
This ability counts creatures, not creature types. For example, if you attack with five creatures — an Elf Shaman, an Elf Warrior, a Goblin Shaman, an Elemental, and a creature with all creature types — the ability will trigger five times. Those creatures will get +3/+0, +2/+0, +2/+0, +1/+0, and +4/+0, respectively.
In a Two-Headed Giant game, only creatures you control trigger the ability and get the bonus, but your teammate's attacking creatures are included in the calculation of those bonuses.