Dragon Spirit is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Flying

How it works : Dragon Spirit

Original English text — Wizards of the Coast / Scryfall

No additional ruling has been published for this card.

Interactions with other cards

These cards' text mentions Dragon Spirit.

Goro-Goro, Disciple of Ryusei

{R}: Creatures you control gain haste until end of turn. {3}{R}{R}: Create a 5/5 red Dragon Spirit creature token with flying. Activate only if you control an attacking modified creature. (Equipment, Auras you control, and counters are modifications.)

Goro-Goro and Satoru

Whenever one or more creatures you control that entered this turn deal combat damage to a player, create a 5/5 red Dragon Spirit creature token with flying. {1}{R}: Creatures you control gain haste until end of turn.

Vrondiss, Rage of Ancients

Enrage — Whenever Vrondiss is dealt damage, you may create a 5/4 red and green Dragon Spirit creature token with "When this token deals damage, sacrifice it." Whenever you roll one or more dice, you may have Vrondiss deal 1 damage to itself.

Tatsumasa, the Dragon's Fang

Equipped creature gets +5/+5. {6}, Exile Tatsumasa: Create a 5/5 blue Dragon Spirit creature token with flying. Return Tatsumasa to the battlefield under its owner's control when that token dies. Equip {3}