Shadow the Hedgehogs abilities mirror those of Sonic in both the game series and in these cards
In the late game, you can follow this spell with a nice target like a Dig Through Time or Big Score
Legendary Artifact Artifact (CTRL to add secondary) Creature Geth, Lord of the Vault Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) : Put target artifact or creature card with mana value X from an opponent's graveyard onto the battlefield under your control tapped
Mono-red aggro and white weenie decks in particular like lots of small creatures, but the offspring costs are often low enough for them to fit into just about any deck
$4.99 Red Elemental Blast 3rd Edition $0.39 Fireball 3rd Edition $4.99 Kessig Flamebreather Innistrad: Crimson Vow $1.79 Highway Robbery Outlaws of Thunder Junction $12.99 Pyroblast Ice Age $2.79 Strike It Rich Modern Horizons 2 $4.99 Dark Ritual 3rd Edition $1.29 Blue Elemental Blast 3rd Edition $3.49 Fireblast Visions $1.99 Goblin Bushwhacker Zendikar $1.49 End the Festivities Innistrad: Crimson Vow $0.39 Abrade Secrets of Strixhaven Mystical Archive
Rowan makes cards that are already extremely strong such as Ad Nauseam and Bolas's Citadel EVEN STRONGER by making each drop of blood you pour into them discount your eventual game-winning spells, or even value pieces or tutors you might play along the way to secure your winning lines