Sage

Sage's kit is built to protect the team:

• Barrier Orb: creates a solid wall you can rotate before placing. After a moment it fortifies. It blocks movement (and vision) until it is destroyed. It can also be used to climb to higher positions;
• Slow Orb: an orb that, on the ground, creates an area that slows whoever crosses it and makes noise when someone walks through;
• Healing Orb (signature): heals a teammate over time, or yourself (more slowly). Since patch 13.00 the self-heal is stronger;
• Resurrection (ultimate): brings a fallen teammate back to life, after a short wait.

Sage is one of three agents who heal (with Skye and Miks) and the only one who can revive a teammate: in a round, her ultimate is literally worth an extra player.

Pick Sage when:

• you are learning the sentinel role: her abilities are simple, and even without complicated setups the wall and the slow delay well;
• the team needs someone to keep teammates alive: heals and the revive change the numbers in long rounds;
• the map has narrow chokes that a wall closes completely;
• you want an agent who is useful for high positions too: the wall can become a step to climb where the enemy does not expect you.

Sage is also a safe pick in solo queue: she is useful in any composition, and the revive helps any team.

Another reason to pick her is the confidence she gives teammates: a duelist who knows they can be healed or revived plays more decisively, and a team that knows it has an extra player "in the pocket" faces important rounds more calmly.