If multiple power and toughness stickers are put on the same creature, the most recent one applies
We can be sure, however, that most fans are looking disappointedly at a Command Tower rather than a Lotus Petal right now
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Here's the list: Unlimited Tropical Island (PL) Tundra (PL) Revised Badlands (PL, LP, GD, EX, NM) Bayou (PL, LP, EX, NM) Plateau (PL, LP, GD) Savannah (PL) Scrubland (LP, GD) Taiga (PL, GD) Tropical Island (PL, LP, GD, EX) Tundra (PL, LP, GD, EX) Underground Sea (PL, GD, EX, NM) Volcanic Island (PO, PL, LP, GD) Foreign Black Bordered - German Badlands (PL) Foreign Black Bordered - French Badlands (LP) Bayou (PL, GD) Plateau (PO, PL, GD, EX) Savannah (LP) Scrubland (PL, GD) Taiga (PL, LP) Tropical Island (PO, LP) Underground Sea (GD) Foreign White Bordered - German Badlands (LP, GD, EX) Bayou (GD, EX) Plateau (PL, LP, GD) Savannah (LP, GD, EX, NM) Scrubland (GD, EX) Taiga (GD) Tropical Island (PL, GD, EX) Tundra (LP, NM) Volcanic Island (PO, LP, GD, EX, NM) Foreign White Bordered - French Bayou (LP) Savannah (PL, LP) Scrubland (PL) Badlands (GD) Taiga (LP, GD, EX) Tropical Island (LP, EX) Volcanic Island (EX) Collectors' Edition Bayou (GD) 30th Anniversary Edition From the 30th Anniversary Edition also comes a Will-o-the-Wisp (Version 2, NM)

Rainbow Rare cards are very premium but the regular-colored ultra rare versions of these cards tend to look much better and are much more desired because of this, despite being more common
I'd run Garruk's Harbinger in just about any Creature-heavy deck