Since Rootha only cares about the highest mana value each turn, cost reduction effects like Magnus are a godsend
$0.69 Airborne Aid Onslaught $7.49 Kalonian Hydra Bloomburrow Commander Decks $0.99 Finale of Revelation Modern Horizons 3 Commander Decks $0.49 Hydroid Krasis Modern Horizons 3 Commander Decks $1.49 Gargos, Vicious Watcher (Resale Foil) Promotional $9.99 Herald of Secret Streams Ixalan $1.99 Vastwood Hydra 2014 Core Set $0.79 Murmuration Bloomburrow Commander Decks $0.35 Gwaihir the Windlord The Lord of the Rings: Tales of Middle-earth $1.99 Gyre Sage Final Fantasy Commander Decks $10.99 Freed from the Real Saviors of Kamigawa $0.99 Lifeblood Hydra Commander Masters 0 results found
Considering this card has an acorn holo-stamp, Im not sure in which format you can assemble it with the Tron lands exactly (maybe with the help of the aforementioned Photo Op?), but if you do, you literally have infinite mana to play with, and victory is just a Fireball away!
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Magnus the Red: The total cost to cast a spell is locked in before you pay that cost
And seeing loyalty ability numbers on the right of Left-Handed Garruk, Caller of Beasts is weird
