For example, if Doctor Doom is dealt 1 damage by a creature with deathtouch while he has indestructible, he won't die if he loses indestructible later in the turn
While theres no universal rule, most Commander decks should aim for around 38 or 39 lands, complemented by roughly 8 mana rocks, ramp spells, or mana-producing creatures (such as Sol Ring, Arcane Signet, Rampant Growth, or Birds of Paradise)
There's an entire Raccoon deck in Bloomburrow just waiting to be broken with the help of Gourmand's Talent
On a completely different tonal note, future Pokemon Card Art Spotlight subject Aoki Toshinao has crafted a positively wonderful scene here
Life is good
Very much like the Jitte you never want to be using this to gain life (unless you are doing some silly infinite combo with Fastbond and Crucible of Worlds)