Whether evoke's sacrifice ability triggers when the creature enters depends on whether the spell's controller chose to pay the evoke cost, not whether they actually paid it (if it was reduced or otherwise altered by another ability, for example).
If you're casting a spell "without paying its mana cost," you can't use its evoke ability.
If a creature spell cast with evoke changes controllers before it enters, it will still be sacrificed when it enters. Similarly, if a creature cast with evoke changes controllers after it enters but before its sacrifice ability resolves, it will still be sacrificed. In both cases, the controller of the creature at the time it left the battlefield will control its leaves-the-battlefield ability.
Last observed on Scryfall 2 months ago at $0.09. Over the trailing 90 days the price moved between $0.03 and $0.10 across 45 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from MM2 — the lineup includes Foil and Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #128 of *Modern Masters 2015*, the set that shipped alongside the May 2015 Modern Masters 2015 release.
Card type: Creature — Elemental, color identity red, printed at uncommon. Uncommons fill the middle-tier slots in a standard booster configuration. Mana cost: {5}{R} (6 converted). Keyword abilities: Evoke.
Legal in Modern, Legacy, Vintage, Commander, and Pauper.
EDHrec ranks this card #11,354 in Commander, putting it in the fringe-play tier of the format's playable pool.
Illustrated by Larry MacDougall. Rarix catalogs 90 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Larry MacDougall
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
Effects that cause you to pay more or less to cast a spell will cause you to pay that much more or less while casting it for its evoke cost, too. That's because they affect the total cost of the spell, not its mana cost.
When you cast a spell by paying its evoke cost, its mana cost doesn't change. You just pay the evoke cost instead.
Evoke doesn't change the timing of when you can cast the creature that has it. If you could cast that creature spell only when you could cast a sorcery, the same is true for cast it with evoke.
