You get a bonafide Plague Wind if you make it indestructible, but killing two or three threats, then leaving a 10/10 in play works just fine
Flow State isnt quite that card, but its in the conversation, and that should tell you everything
Steward of the Harvest makes it so that a creature can be a fetch land, or become a flying manland, or even be a defensive Maze of Ith
It is not that far off a Brainstorm and keeps you hitting new things in subsequent draws should you not have that shuffle effect handy
Following was just grinding out Trickstar cards by repetitively playing against Blue Angel in the Duelist Challenges
That discount sticks around once you transform it into Crystallized Serah, and all your legends get +2/+2, turning your board into a buffed-up legendary army