Any holofoil from Legendary Collection is worth a pretty penny, but Pikachu is one of the most coveted and expensive in the lot
On the subject of Odyssey lands, this card looks like it would also be pretty good with the filter lands from that set
Luckily, the adventure part of the card gives you just that
You may put up to two creature and/or land cards from among the milled cards into your hand
Also, Rosewater explained on his personal blog that all of the stickers are made with a very light glue (think Post It Note glue) that can be used numerous times and wont harm the card its stickered on. He also recommends using slips of paper, as long as the proxied sticker comes from the sheet the player pulled from their booster
Butterfree #3Rare $0.70 Nuzleaf #6Uncommon $0.18 Helioptile #36Common $0.18 Litleo (18) #18Common $0.20 Scraggy #58Common $0.21 Scrafty #59Rare $0.47 Stunky (54) #54Common $0.21 Espurr #42Common $0.44 Rapidash #15Uncommon $0.62 Geodude #45Common $0.23 Blaine's Kangaskhan #36Uncommon $7.70 Kangaskhan #88Common $11.22 Kangaskhan #26Rare $4.77 Kangaskhan #6Holo Rare $35.00 Kangaskhan #38Uncommon $0.75 Kangaskhan #36Uncommon $0.67 Kangaskhan #71Common $0.31 Kangaskhan #75Uncommon $0.26 Kangaskhan #99Holo Rare $0.48 Kangaskhan #55Common $0.29
