The most obvious of these factors is the synergy of haste with Saproling Burst, which was known to some as "The Fix." That extra turn almost doubled the strength of the Burst and made it hit for the full 20 damage in only two turns, which would normally mean a kill on turn five, or turn four if backed up by a Blastoderm
Although Charizard has never been officially classified as a Dragon type (despite Alolan Exeggutor somehow making the grade) he still makes it into the Sun & Moon Dragon Majesty special set (special in the sense it couldn't be bought in booster boxes and was only available in collection boxes, pin boxes etc.)
(Click to enlarge.)In the screenshot at left, look across the row for card #124
If no card is discarded, most likely because that player's hand is empty and an effect says they can't draw cards, the conniving creature does not receive a +1/+1 counter
This one amuses me because apparently they have modern artillery in Dominaria, and someone designed a spell that creates one such bomb in the shape of a brain
The first is to use the effect of another card to simply give one or more creatures the Flying keyword