Administrator of Virtue

Ward — Tap a creature you control.

{t}: Add one mana of any color to your mana pool. Use
this mana only to cast frog spells.

The first time a creature you control enters the
battlefield during a pre-combat main phase, combat phase,
or, the Post-combat main phase this turn, draw a card. If
a creature entered the battlefield during each of these
phases, search your library for a frog, reveal it and put it
into your hand. Shuffle your library.