
Dispose
Marci grabs an allied or enemy target and throws it effortlessly behind her, damaging and slowing the unit if it's an enemy. Any enemy units in the landing area will also be damaged and slowed.
Abilities, roles and builds with an explanation for every purchase.

HERO GAME PLANWe buff an ally and start a sudden engagement; playing as a core requires a window for Unleash.
Proving that undying loyalty yields unrivaled power, Marci always marches into battle ready to raise fists in defense of her companions. Effortlessly flinging friends and foes around the battlefield, she happily bounds into any brawl, able to grant allies a deadly edge and unleash a hidden power strong enough to make even gods reconsider the wisdom of a hostile path.
My recommendation is a starting point. We choose another position together with the team and for its needs.
I contribute through laning, control and movement. I adapt the expensive core route to my budget.
I need protected farm, my item window and damage on important targets.
This is an editorial starting plan based on hero mechanics. It is not presented as a match I have already tested or a popularity ranking.
Here is my initial plan: I do my role's job first, then choose the items the team needs. I adapt the order and expensive purchases to the opponent.

Help maintain close contact and pass through groups of units.

Improves physical fighting up close; requires attention to your health and activation timing.

Provides a window for my actions against eligible magical damage and disables. I check effects that pierce the protection.

Adds a chance to stun on attack, making it harder for the target to get out of melee range.

Unlocks or upgrades Unleash. The exact effects are shown below in the abilities section.

I do not assign one ‘correct’ minute to every purchase. I look at my gold, the next fight and the problem: am I missing mana, target access, control or protection? If an expensive slot will arrive too late, I get a useful answer earlier.
Original Valve icons and descriptions. Cooldowns and mana are shown by level from the data snapshot; talents and upgrades can change the values.

Marci grabs an allied or enemy target and throws it effortlessly behind her, damaging and slowing the unit if it's an enemy. Any enemy units in the landing area will also be damaged and slowed.

The hero moves toward an allied target and rebounds off it in the selected direction for the chosen distance. Landing damages and stuns all enemies in the area.
The hero moves toward an allied target and rebounds off it in the selected direction for the chosen distance. Landing damages and stuns all enemies in the area. With alternate cast enabled, the hero jumps to the selected point together with the allied target. The ally used for the rebound gains +25% movement speed for 4 sec.
Increases damage. Rebound can be cast on enemies, and causes Marci to also get the speed boost when she casts it.

Gives the ability’s owner passive bonus lifesteal and attack damage.
Passively grants Marci lifesteal and bonus attack damage. When cast on an ally, she provides them with 75% of her passive lifesteal and attack damage bonus. Additionally Marci creates a shared all damage barrier for herself and her partner. As Marci attacks heroes, 30% of the damage dealt restores the barrier.

The hero draws on her hidden power and gains fury charges, allowing rapid strikes that slow the target’s movement and attack speed for 2 sec.
The hero draws on her hidden power and gains fury charges, allowing rapid strikes that slow the target’s movement and attack speed for 2 sec. The final strike in each fury combo creates a damaging pulse around the target. After a fury combo, the hero cannot attack for 1.5 sec. Casting this ability grants +15% movement speed.
Reduces cooldown by 10 sec. Activating this ability applies a basic dispel to the owner. While it is active, casting other abilities creates a pulse. Pulses silence enemies for 1 sec. DISPEL TYPE: Basic
These abilities are not necessarily available at the same time. I check the condition beside the name: innate ability, another form or an Aghanim purchase.

The hero whistles for her courier, instantly teleporting it to her. If the courier was at the fountain, it brings items from the stash. After teleporting, the courier delivers the items and returns to the fountain.
Marci whistles to instantly summon her courier to her. If the courier started in the fountain, it will take items from Marci's stash. After teleporting it will transfer these items to Marci and head back to the fountain. Passively grants all allied couriers 3 bonus levels and 1 bonus health.
These are fields from the official source. The hero's final values in the client account for attributes and other active mechanics.
Items, slang and real episodes help connect abilities with what happens in a match.