These were Magic's first four-color legendary creatures, which opened up a huge swathe of deckbuilding options that were only previously available to five-color decks
(This is the same reason I've stopped playing Phyrexian Arena in Standardit's just too risky with Sheoldred being so heavily played.) In Modern, the card could be a Seismic Assault replacement and does have the huge, huge upside of only requiring one red mana (although it does cost one more mana overall), but is it going to be fast enough
Ponies: The Galloping Introducing Ponies: The Galloping
The Vista scene is composed of five land cards shown off in Wednesday's MTG Assassin's Creed spoilers - Sunbaked Canyon, Fiery Islet, Silent Clearing, Nurturing Peatland, and Waterlogged Grove - and Ezio Auditore da Firenze's official Legendary Creature card
Double strike is a perfect fit
Printed in the Dungeons & Dragons: Adventures in the Forgotten Realms set, Froghemoth is a mono-green 4/4 with trample and haste for five mana