Octavia, Living Thesis

Mana cost: {8}{U}{U}
Type: Legendary Creature — Elemental Octopus
Power / toughness: 8 / 8
Set: Outlaws of Thunder Junction Commander #103 (rare)
Price: $0.83 USD

This spell costs {8} less to cast if you have eight or more instant and/or sorcery cards in your graveyard.
Ward {8}
Magecraft — Whenever you cast or copy an instant or sorcery spell, target creature has base power and toughness 8/8 until end of turn.

Octavia, Living Thesis has 4 printings, first in Commander 2021 (2021). EDHREC ranks it #6,255 among Commander cards. It appears most in Talrand, Sky Summoner decks (1,476 on EDHREC). 2 public decks on TCG run it. It has 6 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: not legal

Public decks that run Octavia, Living Thesis

Prismari Performance - Commander 2021, led by Zaffai, Thunder Conductor
Quick Draw - Outlaws of Thunder Junction Commander, led by Stella Lee, Wild Card

Commanders that run Octavia, Living Thesis most

Deck counts from EDHREC.

Often played with Octavia, Living Thesis

Cards that show up in the same decks on EDHREC.

Rulings

2021-04-16: If an effect creates a copy of an instant or sorcery spell, this will also cause the magecraft ability to trigger.
2021-04-16: Some effects instruct you to copy an instant or sorcery card in a zone other than the stack. These copies do not cause magecraft abilities to trigger. However, most effects that do this also allow you to cast the copy, and casting the copy will cause magecraft abilities to trigger.
2021-04-16: For example, if you control Archmage Emeritus and cast an instant or sorcery spell, Archmage Emeritus's magecraft ability will trigger and you will draw a card.
2021-04-16: Each magecraft ability has a different effect, although they all have the same trigger condition, whenever you cast or copy an instant or sorcery spell.
2021-04-16: If an effect creates multiple copies of an instant or sorcery spell, magecraft abilities trigger once for each copy created by the effect.
2021-04-16: If a player casts a spell that targets multiple permanents their opponent controls with ward, each of those ward abilities will trigger. If that player doesn't pay for all of them, the spell will be countered.